1 /* Remote target communications for serial-line targets in custom GDB protocol
3 Copyright (C) 1988-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20 /* See the GDB User Guide for details of the GDB remote protocol. */
23 #include "gdb_string.h"
29 #include "exceptions.h"
31 /*#include "terminal.h" */
34 #include "gdb-stabs.h"
35 #include "gdbthread.h"
39 #include "gdb_assert.h"
42 #include "cli/cli-decode.h"
43 #include "cli/cli-setshow.h"
44 #include "target-descriptions.h"
49 #include "event-loop.h"
50 #include "event-top.h"
56 #include "gdbcore.h" /* for exec_bfd */
58 #include "remote-fileio.h"
59 #include "gdb/fileio.h"
61 #include "xml-support.h"
63 #include "memory-map.h"
65 #include "tracepoint.h"
69 /* Temp hacks for tracepoint encoding migration. */
70 static char *target_buf
;
71 static long target_buf_size
;
73 encode_actions (struct breakpoint
*t
, struct bp_location
*tloc
,
74 char ***tdp_actions
, char ***stepping_actions
);
76 /* The size to align memory write packets, when practical. The protocol
77 does not guarantee any alignment, and gdb will generate short
78 writes and unaligned writes, but even as a best-effort attempt this
79 can improve bulk transfers. For instance, if a write is misaligned
80 relative to the target's data bus, the stub may need to make an extra
81 round trip fetching data from the target. This doesn't make a
82 huge difference, but it's easy to do, so we try to be helpful.
84 The alignment chosen is arbitrary; usually data bus width is
85 important here, not the possibly larger cache line size. */
86 enum { REMOTE_ALIGN_WRITES
= 16 };
88 /* Prototypes for local functions. */
89 static void cleanup_sigint_signal_handler (void *dummy
);
90 static void initialize_sigint_signal_handler (void);
91 static int getpkt_sane (char **buf
, long *sizeof_buf
, int forever
);
92 static int getpkt_or_notif_sane (char **buf
, long *sizeof_buf
,
95 static void handle_remote_sigint (int);
96 static void handle_remote_sigint_twice (int);
97 static void async_remote_interrupt (gdb_client_data
);
98 void async_remote_interrupt_twice (gdb_client_data
);
100 static void remote_files_info (struct target_ops
*ignore
);
102 static void remote_prepare_to_store (struct regcache
*regcache
);
104 static void remote_open (char *name
, int from_tty
);
106 static void extended_remote_open (char *name
, int from_tty
);
108 static void remote_open_1 (char *, int, struct target_ops
*, int extended_p
);
110 static void remote_close (int quitting
);
112 static void remote_mourn (struct target_ops
*ops
);
114 static void extended_remote_restart (void);
116 static void extended_remote_mourn (struct target_ops
*);
118 static void remote_mourn_1 (struct target_ops
*);
120 static void remote_send (char **buf
, long *sizeof_buf_p
);
122 static int readchar (int timeout
);
124 static void remote_kill (struct target_ops
*ops
);
126 static int tohex (int nib
);
128 static int remote_can_async_p (void);
130 static int remote_is_async_p (void);
132 static void remote_async (void (*callback
) (enum inferior_event_type event_type
,
133 void *context
), void *context
);
135 static void remote_detach (struct target_ops
*ops
, char *args
, int from_tty
);
137 static void remote_interrupt (int signo
);
139 static void remote_interrupt_twice (int signo
);
141 static void interrupt_query (void);
143 static void set_general_thread (struct ptid ptid
);
144 static void set_continue_thread (struct ptid ptid
);
146 static void get_offsets (void);
148 static void skip_frame (void);
150 static long read_frame (char **buf_p
, long *sizeof_buf
);
152 static int hexnumlen (ULONGEST num
);
154 static void init_remote_ops (void);
156 static void init_extended_remote_ops (void);
158 static void remote_stop (ptid_t
);
160 static int ishex (int ch
, int *val
);
162 static int stubhex (int ch
);
164 static int hexnumstr (char *, ULONGEST
);
166 static int hexnumnstr (char *, ULONGEST
, int);
168 static CORE_ADDR
remote_address_masked (CORE_ADDR
);
170 static void print_packet (char *);
172 static void compare_sections_command (char *, int);
174 static void packet_command (char *, int);
176 static int stub_unpack_int (char *buff
, int fieldlength
);
178 static ptid_t
remote_current_thread (ptid_t oldptid
);
180 static void remote_find_new_threads (void);
182 static void record_currthread (ptid_t currthread
);
184 static int fromhex (int a
);
186 extern int hex2bin (const char *hex
, gdb_byte
*bin
, int count
);
188 extern int bin2hex (const gdb_byte
*bin
, char *hex
, int count
);
190 static int putpkt_binary (char *buf
, int cnt
);
192 static void check_binary_download (CORE_ADDR addr
);
194 struct packet_config
;
196 static void show_packet_config_cmd (struct packet_config
*config
);
198 static void update_packet_config (struct packet_config
*config
);
200 static void set_remote_protocol_packet_cmd (char *args
, int from_tty
,
201 struct cmd_list_element
*c
);
203 static void show_remote_protocol_packet_cmd (struct ui_file
*file
,
205 struct cmd_list_element
*c
,
208 static char *write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
);
209 static ptid_t
read_ptid (char *buf
, char **obuf
);
211 static void remote_set_permissions (void);
214 static int remote_get_trace_status (struct trace_status
*ts
);
216 static int remote_upload_tracepoints (struct uploaded_tp
**utpp
);
218 static int remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
);
220 static void remote_query_supported (void);
222 static void remote_check_symbols (struct objfile
*objfile
);
224 void _initialize_remote (void);
227 static struct stop_reply
*stop_reply_xmalloc (void);
228 static void stop_reply_xfree (struct stop_reply
*);
229 static void do_stop_reply_xfree (void *arg
);
230 static void remote_parse_stop_reply (char *buf
, struct stop_reply
*);
231 static void push_stop_reply (struct stop_reply
*);
232 static void remote_get_pending_stop_replies (void);
233 static void discard_pending_stop_replies (int pid
);
234 static int peek_stop_reply (ptid_t ptid
);
236 static void remote_async_inferior_event_handler (gdb_client_data
);
237 static void remote_async_get_pending_events_handler (gdb_client_data
);
239 static void remote_terminal_ours (void);
241 static int remote_read_description_p (struct target_ops
*target
);
243 static void remote_console_output (char *msg
);
245 /* The non-stop remote protocol provisions for one pending stop reply.
246 This is where we keep it until it is acknowledged. */
248 static struct stop_reply
*pending_stop_reply
= NULL
;
252 static struct cmd_list_element
*remote_cmdlist
;
254 /* For "set remote" and "show remote". */
256 static struct cmd_list_element
*remote_set_cmdlist
;
257 static struct cmd_list_element
*remote_show_cmdlist
;
259 /* Description of the remote protocol state for the currently
260 connected target. This is per-target state, and independent of the
261 selected architecture. */
265 /* A buffer to use for incoming packets, and its current size. The
266 buffer is grown dynamically for larger incoming packets.
267 Outgoing packets may also be constructed in this buffer.
268 BUF_SIZE is always at least REMOTE_PACKET_SIZE;
269 REMOTE_PACKET_SIZE should be used to limit the length of outgoing
274 /* If we negotiated packet size explicitly (and thus can bypass
275 heuristics for the largest packet size that will not overflow
276 a buffer in the stub), this will be set to that packet size.
277 Otherwise zero, meaning to use the guessed size. */
278 long explicit_packet_size
;
280 /* remote_wait is normally called when the target is running and
281 waits for a stop reply packet. But sometimes we need to call it
282 when the target is already stopped. We can send a "?" packet
283 and have remote_wait read the response. Or, if we already have
284 the response, we can stash it in BUF and tell remote_wait to
285 skip calling getpkt. This flag is set when BUF contains a
286 stop reply packet and the target is not waiting. */
287 int cached_wait_status
;
289 /* True, if in no ack mode. That is, neither GDB nor the stub will
290 expect acks from each other. The connection is assumed to be
294 /* True if we're connected in extended remote mode. */
297 /* True if the stub reported support for multi-process
299 int multi_process_aware
;
301 /* True if we resumed the target and we're waiting for the target to
302 stop. In the mean time, we can't start another command/query.
303 The remote server wouldn't be ready to process it, so we'd
304 timeout waiting for a reply that would never come and eventually
305 we'd close the connection. This can happen in asynchronous mode
306 because we allow GDB commands while the target is running. */
307 int waiting_for_stop_reply
;
309 /* True if the stub reports support for non-stop mode. */
312 /* True if the stub reports support for vCont;t. */
315 /* True if the stub reports support for conditional tracepoints. */
316 int cond_tracepoints
;
318 /* True if the stub reports support for fast tracepoints. */
319 int fast_tracepoints
;
321 /* True if the stub reports support for static tracepoints. */
322 int static_tracepoints
;
324 /* True if the stub reports support for installing tracepoint while
326 int install_in_trace
;
328 /* True if the stub can continue running a trace while GDB is
330 int disconnected_tracing
;
332 /* True if the stub reports support for enabling and disabling
333 tracepoints while a trace experiment is running. */
334 int enable_disable_tracepoints
;
336 /* True if the stub can collect strings using tracenz bytecode. */
339 /* Nonzero if the user has pressed Ctrl-C, but the target hasn't
340 responded to that. */
344 /* Private data that we'll store in (struct thread_info)->private. */
345 struct private_thread_info
352 free_private_thread_info (struct private_thread_info
*info
)
358 /* Returns true if the multi-process extensions are in effect. */
360 remote_multi_process_p (struct remote_state
*rs
)
362 return rs
->multi_process_aware
;
365 /* This data could be associated with a target, but we do not always
366 have access to the current target when we need it, so for now it is
367 static. This will be fine for as long as only one target is in use
369 static struct remote_state remote_state
;
371 static struct remote_state
*
372 get_remote_state_raw (void)
374 return &remote_state
;
377 /* Description of the remote protocol for a given architecture. */
381 long offset
; /* Offset into G packet. */
382 long regnum
; /* GDB's internal register number. */
383 LONGEST pnum
; /* Remote protocol register number. */
384 int in_g_packet
; /* Always part of G packet. */
385 /* long size in bytes; == register_size (target_gdbarch, regnum);
387 /* char *name; == gdbarch_register_name (target_gdbarch, regnum);
391 struct remote_arch_state
393 /* Description of the remote protocol registers. */
394 long sizeof_g_packet
;
396 /* Description of the remote protocol registers indexed by REGNUM
397 (making an array gdbarch_num_regs in size). */
398 struct packet_reg
*regs
;
400 /* This is the size (in chars) of the first response to the ``g''
401 packet. It is used as a heuristic when determining the maximum
402 size of memory-read and memory-write packets. A target will
403 typically only reserve a buffer large enough to hold the ``g''
404 packet. The size does not include packet overhead (headers and
406 long actual_register_packet_size
;
408 /* This is the maximum size (in chars) of a non read/write packet.
409 It is also used as a cap on the size of read/write packets. */
410 long remote_packet_size
;
413 long sizeof_pkt
= 2000;
415 /* Utility: generate error from an incoming stub packet. */
417 trace_error (char *buf
)
420 return; /* not an error msg */
423 case '1': /* malformed packet error */
424 if (*++buf
== '0') /* general case: */
425 error (_("remote.c: error in outgoing packet."));
427 error (_("remote.c: error in outgoing packet at field #%ld."),
428 strtol (buf
, NULL
, 16));
430 error (_("trace API error 0x%s."), ++buf
);
432 error (_("Target returns error code '%s'."), buf
);
436 /* Utility: wait for reply from stub, while accepting "O" packets. */
438 remote_get_noisy_reply (char **buf_p
,
441 do /* Loop on reply from remote stub. */
445 QUIT
; /* Allow user to bail out with ^C. */
446 getpkt (buf_p
, sizeof_buf
, 0);
450 else if (strncmp (buf
, "qRelocInsn:", strlen ("qRelocInsn:")) == 0)
453 CORE_ADDR from
, to
, org_to
;
455 int adjusted_size
= 0;
456 volatile struct gdb_exception ex
;
458 p
= buf
+ strlen ("qRelocInsn:");
459 pp
= unpack_varlen_hex (p
, &ul
);
461 error (_("invalid qRelocInsn packet: %s"), buf
);
465 unpack_varlen_hex (p
, &ul
);
470 TRY_CATCH (ex
, RETURN_MASK_ALL
)
472 gdbarch_relocate_instruction (target_gdbarch
, &to
, from
);
476 adjusted_size
= to
- org_to
;
478 sprintf (buf
, "qRelocInsn:%x", adjusted_size
);
481 else if (ex
.reason
< 0 && ex
.error
== MEMORY_ERROR
)
483 /* Propagate memory errors silently back to the target.
484 The stub may have limited the range of addresses we
485 can write to, for example. */
490 /* Something unexpectedly bad happened. Be verbose so
491 we can tell what, and propagate the error back to the
492 stub, so it doesn't get stuck waiting for a
494 exception_fprintf (gdb_stderr
, ex
,
495 _("warning: relocating instruction: "));
499 else if (buf
[0] == 'O' && buf
[1] != 'K')
500 remote_console_output (buf
+ 1); /* 'O' message from stub */
502 return buf
; /* Here's the actual reply. */
507 /* Handle for retreving the remote protocol data from gdbarch. */
508 static struct gdbarch_data
*remote_gdbarch_data_handle
;
510 static struct remote_arch_state
*
511 get_remote_arch_state (void)
513 return gdbarch_data (target_gdbarch
, remote_gdbarch_data_handle
);
516 /* Fetch the global remote target state. */
518 static struct remote_state
*
519 get_remote_state (void)
521 /* Make sure that the remote architecture state has been
522 initialized, because doing so might reallocate rs->buf. Any
523 function which calls getpkt also needs to be mindful of changes
524 to rs->buf, but this call limits the number of places which run
526 get_remote_arch_state ();
528 return get_remote_state_raw ();
532 compare_pnums (const void *lhs_
, const void *rhs_
)
534 const struct packet_reg
* const *lhs
= lhs_
;
535 const struct packet_reg
* const *rhs
= rhs_
;
537 if ((*lhs
)->pnum
< (*rhs
)->pnum
)
539 else if ((*lhs
)->pnum
== (*rhs
)->pnum
)
546 map_regcache_remote_table (struct gdbarch
*gdbarch
, struct packet_reg
*regs
)
548 int regnum
, num_remote_regs
, offset
;
549 struct packet_reg
**remote_regs
;
551 for (regnum
= 0; regnum
< gdbarch_num_regs (gdbarch
); regnum
++)
553 struct packet_reg
*r
= ®s
[regnum
];
555 if (register_size (gdbarch
, regnum
) == 0)
556 /* Do not try to fetch zero-sized (placeholder) registers. */
559 r
->pnum
= gdbarch_remote_register_number (gdbarch
, regnum
);
564 /* Define the g/G packet format as the contents of each register
565 with a remote protocol number, in order of ascending protocol
568 remote_regs
= alloca (gdbarch_num_regs (gdbarch
)
569 * sizeof (struct packet_reg
*));
570 for (num_remote_regs
= 0, regnum
= 0;
571 regnum
< gdbarch_num_regs (gdbarch
);
573 if (regs
[regnum
].pnum
!= -1)
574 remote_regs
[num_remote_regs
++] = ®s
[regnum
];
576 qsort (remote_regs
, num_remote_regs
, sizeof (struct packet_reg
*),
579 for (regnum
= 0, offset
= 0; regnum
< num_remote_regs
; regnum
++)
581 remote_regs
[regnum
]->in_g_packet
= 1;
582 remote_regs
[regnum
]->offset
= offset
;
583 offset
+= register_size (gdbarch
, remote_regs
[regnum
]->regnum
);
589 /* Given the architecture described by GDBARCH, return the remote
590 protocol register's number and the register's offset in the g/G
591 packets of GDB register REGNUM, in PNUM and POFFSET respectively.
592 If the target does not have a mapping for REGNUM, return false,
593 otherwise, return true. */
596 remote_register_number_and_offset (struct gdbarch
*gdbarch
, int regnum
,
597 int *pnum
, int *poffset
)
600 struct packet_reg
*regs
;
601 struct cleanup
*old_chain
;
603 gdb_assert (regnum
< gdbarch_num_regs (gdbarch
));
605 regs
= xcalloc (gdbarch_num_regs (gdbarch
), sizeof (struct packet_reg
));
606 old_chain
= make_cleanup (xfree
, regs
);
608 sizeof_g_packet
= map_regcache_remote_table (gdbarch
, regs
);
610 *pnum
= regs
[regnum
].pnum
;
611 *poffset
= regs
[regnum
].offset
;
613 do_cleanups (old_chain
);
619 init_remote_state (struct gdbarch
*gdbarch
)
621 struct remote_state
*rs
= get_remote_state_raw ();
622 struct remote_arch_state
*rsa
;
624 rsa
= GDBARCH_OBSTACK_ZALLOC (gdbarch
, struct remote_arch_state
);
626 /* Use the architecture to build a regnum<->pnum table, which will be
627 1:1 unless a feature set specifies otherwise. */
628 rsa
->regs
= GDBARCH_OBSTACK_CALLOC (gdbarch
,
629 gdbarch_num_regs (gdbarch
),
632 /* Record the maximum possible size of the g packet - it may turn out
634 rsa
->sizeof_g_packet
= map_regcache_remote_table (gdbarch
, rsa
->regs
);
636 /* Default maximum number of characters in a packet body. Many
637 remote stubs have a hardwired buffer size of 400 bytes
638 (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used
639 as the maximum packet-size to ensure that the packet and an extra
640 NUL character can always fit in the buffer. This stops GDB
641 trashing stubs that try to squeeze an extra NUL into what is
642 already a full buffer (As of 1999-12-04 that was most stubs). */
643 rsa
->remote_packet_size
= 400 - 1;
645 /* This one is filled in when a ``g'' packet is received. */
646 rsa
->actual_register_packet_size
= 0;
648 /* Should rsa->sizeof_g_packet needs more space than the
649 default, adjust the size accordingly. Remember that each byte is
650 encoded as two characters. 32 is the overhead for the packet
651 header / footer. NOTE: cagney/1999-10-26: I suspect that 8
652 (``$NN:G...#NN'') is a better guess, the below has been padded a
654 if (rsa
->sizeof_g_packet
> ((rsa
->remote_packet_size
- 32) / 2))
655 rsa
->remote_packet_size
= (rsa
->sizeof_g_packet
* 2 + 32);
657 /* Make sure that the packet buffer is plenty big enough for
658 this architecture. */
659 if (rs
->buf_size
< rsa
->remote_packet_size
)
661 rs
->buf_size
= 2 * rsa
->remote_packet_size
;
662 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
668 /* Return the current allowed size of a remote packet. This is
669 inferred from the current architecture, and should be used to
670 limit the length of outgoing packets. */
672 get_remote_packet_size (void)
674 struct remote_state
*rs
= get_remote_state ();
675 struct remote_arch_state
*rsa
= get_remote_arch_state ();
677 if (rs
->explicit_packet_size
)
678 return rs
->explicit_packet_size
;
680 return rsa
->remote_packet_size
;
683 static struct packet_reg
*
684 packet_reg_from_regnum (struct remote_arch_state
*rsa
, long regnum
)
686 if (regnum
< 0 && regnum
>= gdbarch_num_regs (target_gdbarch
))
690 struct packet_reg
*r
= &rsa
->regs
[regnum
];
692 gdb_assert (r
->regnum
== regnum
);
697 static struct packet_reg
*
698 packet_reg_from_pnum (struct remote_arch_state
*rsa
, LONGEST pnum
)
702 for (i
= 0; i
< gdbarch_num_regs (target_gdbarch
); i
++)
704 struct packet_reg
*r
= &rsa
->regs
[i
];
712 /* FIXME: graces/2002-08-08: These variables should eventually be
713 bound to an instance of the target object (as in gdbarch-tdep()),
714 when such a thing exists. */
716 /* This is set to the data address of the access causing the target
717 to stop for a watchpoint. */
718 static CORE_ADDR remote_watch_data_address
;
720 /* This is non-zero if target stopped for a watchpoint. */
721 static int remote_stopped_by_watchpoint_p
;
723 static struct target_ops remote_ops
;
725 static struct target_ops extended_remote_ops
;
727 /* FIXME: cagney/1999-09-23: Even though getpkt was called with
728 ``forever'' still use the normal timeout mechanism. This is
729 currently used by the ASYNC code to guarentee that target reads
730 during the initial connect always time-out. Once getpkt has been
731 modified to return a timeout indication and, in turn
732 remote_wait()/wait_for_inferior() have gained a timeout parameter
734 static int wait_forever_enabled_p
= 1;
736 /* Allow the user to specify what sequence to send to the remote
737 when he requests a program interruption: Although ^C is usually
738 what remote systems expect (this is the default, here), it is
739 sometimes preferable to send a break. On other systems such
740 as the Linux kernel, a break followed by g, which is Magic SysRq g
741 is required in order to interrupt the execution. */
742 const char interrupt_sequence_control_c
[] = "Ctrl-C";
743 const char interrupt_sequence_break
[] = "BREAK";
744 const char interrupt_sequence_break_g
[] = "BREAK-g";
745 static const char *const interrupt_sequence_modes
[] =
747 interrupt_sequence_control_c
,
748 interrupt_sequence_break
,
749 interrupt_sequence_break_g
,
752 static const char *interrupt_sequence_mode
= interrupt_sequence_control_c
;
755 show_interrupt_sequence (struct ui_file
*file
, int from_tty
,
756 struct cmd_list_element
*c
,
759 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
760 fprintf_filtered (file
,
761 _("Send the ASCII ETX character (Ctrl-c) "
762 "to the remote target to interrupt the "
763 "execution of the program.\n"));
764 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
765 fprintf_filtered (file
,
766 _("send a break signal to the remote target "
767 "to interrupt the execution of the program.\n"));
768 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
769 fprintf_filtered (file
,
770 _("Send a break signal and 'g' a.k.a. Magic SysRq g to "
771 "the remote target to interrupt the execution "
772 "of Linux kernel.\n"));
774 internal_error (__FILE__
, __LINE__
,
775 _("Invalid value for interrupt_sequence_mode: %s."),
776 interrupt_sequence_mode
);
779 /* This boolean variable specifies whether interrupt_sequence is sent
780 to the remote target when gdb connects to it.
781 This is mostly needed when you debug the Linux kernel: The Linux kernel
782 expects BREAK g which is Magic SysRq g for connecting gdb. */
783 static int interrupt_on_connect
= 0;
785 /* This variable is used to implement the "set/show remotebreak" commands.
786 Since these commands are now deprecated in favor of "set/show remote
787 interrupt-sequence", it no longer has any effect on the code. */
788 static int remote_break
;
791 set_remotebreak (char *args
, int from_tty
, struct cmd_list_element
*c
)
794 interrupt_sequence_mode
= interrupt_sequence_break
;
796 interrupt_sequence_mode
= interrupt_sequence_control_c
;
800 show_remotebreak (struct ui_file
*file
, int from_tty
,
801 struct cmd_list_element
*c
,
806 /* Descriptor for I/O to remote machine. Initialize it to NULL so that
807 remote_open knows that we don't have a file open when the program
809 static struct serial
*remote_desc
= NULL
;
811 /* This variable sets the number of bits in an address that are to be
812 sent in a memory ("M" or "m") packet. Normally, after stripping
813 leading zeros, the entire address would be sent. This variable
814 restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The
815 initial implementation of remote.c restricted the address sent in
816 memory packets to ``host::sizeof long'' bytes - (typically 32
817 bits). Consequently, for 64 bit targets, the upper 32 bits of an
818 address was never sent. Since fixing this bug may cause a break in
819 some remote targets this variable is principly provided to
820 facilitate backward compatibility. */
822 static int remote_address_size
;
824 /* Temporary to track who currently owns the terminal. See
825 remote_terminal_* for more details. */
827 static int remote_async_terminal_ours_p
;
829 /* The executable file to use for "run" on the remote side. */
831 static char *remote_exec_file
= "";
834 /* User configurable variables for the number of characters in a
835 memory read/write packet. MIN (rsa->remote_packet_size,
836 rsa->sizeof_g_packet) is the default. Some targets need smaller
837 values (fifo overruns, et.al.) and some users need larger values
838 (speed up transfers). The variables ``preferred_*'' (the user
839 request), ``current_*'' (what was actually set) and ``forced_*''
840 (Positive - a soft limit, negative - a hard limit). */
842 struct memory_packet_config
849 /* Compute the current size of a read/write packet. Since this makes
850 use of ``actual_register_packet_size'' the computation is dynamic. */
853 get_memory_packet_size (struct memory_packet_config
*config
)
855 struct remote_state
*rs
= get_remote_state ();
856 struct remote_arch_state
*rsa
= get_remote_arch_state ();
858 /* NOTE: The somewhat arbitrary 16k comes from the knowledge (folk
859 law?) that some hosts don't cope very well with large alloca()
860 calls. Eventually the alloca() code will be replaced by calls to
861 xmalloc() and make_cleanups() allowing this restriction to either
862 be lifted or removed. */
863 #ifndef MAX_REMOTE_PACKET_SIZE
864 #define MAX_REMOTE_PACKET_SIZE 16384
866 /* NOTE: 20 ensures we can write at least one byte. */
867 #ifndef MIN_REMOTE_PACKET_SIZE
868 #define MIN_REMOTE_PACKET_SIZE 20
873 if (config
->size
<= 0)
874 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
876 what_they_get
= config
->size
;
880 what_they_get
= get_remote_packet_size ();
881 /* Limit the packet to the size specified by the user. */
883 && what_they_get
> config
->size
)
884 what_they_get
= config
->size
;
886 /* Limit it to the size of the targets ``g'' response unless we have
887 permission from the stub to use a larger packet size. */
888 if (rs
->explicit_packet_size
== 0
889 && rsa
->actual_register_packet_size
> 0
890 && what_they_get
> rsa
->actual_register_packet_size
)
891 what_they_get
= rsa
->actual_register_packet_size
;
893 if (what_they_get
> MAX_REMOTE_PACKET_SIZE
)
894 what_they_get
= MAX_REMOTE_PACKET_SIZE
;
895 if (what_they_get
< MIN_REMOTE_PACKET_SIZE
)
896 what_they_get
= MIN_REMOTE_PACKET_SIZE
;
898 /* Make sure there is room in the global buffer for this packet
899 (including its trailing NUL byte). */
900 if (rs
->buf_size
< what_they_get
+ 1)
902 rs
->buf_size
= 2 * what_they_get
;
903 rs
->buf
= xrealloc (rs
->buf
, 2 * what_they_get
);
906 return what_they_get
;
909 /* Update the size of a read/write packet. If they user wants
910 something really big then do a sanity check. */
913 set_memory_packet_size (char *args
, struct memory_packet_config
*config
)
915 int fixed_p
= config
->fixed_p
;
916 long size
= config
->size
;
919 error (_("Argument required (integer, `fixed' or `limited')."));
920 else if (strcmp (args
, "hard") == 0
921 || strcmp (args
, "fixed") == 0)
923 else if (strcmp (args
, "soft") == 0
924 || strcmp (args
, "limit") == 0)
930 size
= strtoul (args
, &end
, 0);
932 error (_("Invalid %s (bad syntax)."), config
->name
);
934 /* Instead of explicitly capping the size of a packet to
935 MAX_REMOTE_PACKET_SIZE or dissallowing it, the user is
936 instead allowed to set the size to something arbitrarily
938 if (size
> MAX_REMOTE_PACKET_SIZE
)
939 error (_("Invalid %s (too large)."), config
->name
);
943 if (fixed_p
&& !config
->fixed_p
)
945 if (! query (_("The target may not be able to correctly handle a %s\n"
946 "of %ld bytes. Change the packet size? "),
948 error (_("Packet size not changed."));
950 /* Update the config. */
951 config
->fixed_p
= fixed_p
;
956 show_memory_packet_size (struct memory_packet_config
*config
)
958 printf_filtered (_("The %s is %ld. "), config
->name
, config
->size
);
960 printf_filtered (_("Packets are fixed at %ld bytes.\n"),
961 get_memory_packet_size (config
));
963 printf_filtered (_("Packets are limited to %ld bytes.\n"),
964 get_memory_packet_size (config
));
967 static struct memory_packet_config memory_write_packet_config
=
969 "memory-write-packet-size",
973 set_memory_write_packet_size (char *args
, int from_tty
)
975 set_memory_packet_size (args
, &memory_write_packet_config
);
979 show_memory_write_packet_size (char *args
, int from_tty
)
981 show_memory_packet_size (&memory_write_packet_config
);
985 get_memory_write_packet_size (void)
987 return get_memory_packet_size (&memory_write_packet_config
);
990 static struct memory_packet_config memory_read_packet_config
=
992 "memory-read-packet-size",
996 set_memory_read_packet_size (char *args
, int from_tty
)
998 set_memory_packet_size (args
, &memory_read_packet_config
);
1002 show_memory_read_packet_size (char *args
, int from_tty
)
1004 show_memory_packet_size (&memory_read_packet_config
);
1008 get_memory_read_packet_size (void)
1010 long size
= get_memory_packet_size (&memory_read_packet_config
);
1012 /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an
1013 extra buffer size argument before the memory read size can be
1014 increased beyond this. */
1015 if (size
> get_remote_packet_size ())
1016 size
= get_remote_packet_size ();
1021 /* Generic configuration support for packets the stub optionally
1022 supports. Allows the user to specify the use of the packet as well
1023 as allowing GDB to auto-detect support in the remote stub. */
1027 PACKET_SUPPORT_UNKNOWN
= 0,
1032 struct packet_config
1036 enum auto_boolean detect
;
1037 enum packet_support support
;
1040 /* Analyze a packet's return value and update the packet config
1051 update_packet_config (struct packet_config
*config
)
1053 switch (config
->detect
)
1055 case AUTO_BOOLEAN_TRUE
:
1056 config
->support
= PACKET_ENABLE
;
1058 case AUTO_BOOLEAN_FALSE
:
1059 config
->support
= PACKET_DISABLE
;
1061 case AUTO_BOOLEAN_AUTO
:
1062 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1068 show_packet_config_cmd (struct packet_config
*config
)
1070 char *support
= "internal-error";
1072 switch (config
->support
)
1075 support
= "enabled";
1077 case PACKET_DISABLE
:
1078 support
= "disabled";
1080 case PACKET_SUPPORT_UNKNOWN
:
1081 support
= "unknown";
1084 switch (config
->detect
)
1086 case AUTO_BOOLEAN_AUTO
:
1087 printf_filtered (_("Support for the `%s' packet "
1088 "is auto-detected, currently %s.\n"),
1089 config
->name
, support
);
1091 case AUTO_BOOLEAN_TRUE
:
1092 case AUTO_BOOLEAN_FALSE
:
1093 printf_filtered (_("Support for the `%s' packet is currently %s.\n"),
1094 config
->name
, support
);
1100 add_packet_config_cmd (struct packet_config
*config
, const char *name
,
1101 const char *title
, int legacy
)
1107 config
->name
= name
;
1108 config
->title
= title
;
1109 config
->detect
= AUTO_BOOLEAN_AUTO
;
1110 config
->support
= PACKET_SUPPORT_UNKNOWN
;
1111 set_doc
= xstrprintf ("Set use of remote protocol `%s' (%s) packet",
1113 show_doc
= xstrprintf ("Show current use of remote "
1114 "protocol `%s' (%s) packet",
1116 /* set/show TITLE-packet {auto,on,off} */
1117 cmd_name
= xstrprintf ("%s-packet", title
);
1118 add_setshow_auto_boolean_cmd (cmd_name
, class_obscure
,
1119 &config
->detect
, set_doc
,
1120 show_doc
, NULL
, /* help_doc */
1121 set_remote_protocol_packet_cmd
,
1122 show_remote_protocol_packet_cmd
,
1123 &remote_set_cmdlist
, &remote_show_cmdlist
);
1124 /* The command code copies the documentation strings. */
1127 /* set/show remote NAME-packet {auto,on,off} -- legacy. */
1132 legacy_name
= xstrprintf ("%s-packet", name
);
1133 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1134 &remote_set_cmdlist
);
1135 add_alias_cmd (legacy_name
, cmd_name
, class_obscure
, 0,
1136 &remote_show_cmdlist
);
1140 static enum packet_result
1141 packet_check_result (const char *buf
)
1145 /* The stub recognized the packet request. Check that the
1146 operation succeeded. */
1148 && isxdigit (buf
[1]) && isxdigit (buf
[2])
1150 /* "Enn" - definitly an error. */
1151 return PACKET_ERROR
;
1153 /* Always treat "E." as an error. This will be used for
1154 more verbose error messages, such as E.memtypes. */
1155 if (buf
[0] == 'E' && buf
[1] == '.')
1156 return PACKET_ERROR
;
1158 /* The packet may or may not be OK. Just assume it is. */
1162 /* The stub does not support the packet. */
1163 return PACKET_UNKNOWN
;
1166 static enum packet_result
1167 packet_ok (const char *buf
, struct packet_config
*config
)
1169 enum packet_result result
;
1171 result
= packet_check_result (buf
);
1176 /* The stub recognized the packet request. */
1177 switch (config
->support
)
1179 case PACKET_SUPPORT_UNKNOWN
:
1181 fprintf_unfiltered (gdb_stdlog
,
1182 "Packet %s (%s) is supported\n",
1183 config
->name
, config
->title
);
1184 config
->support
= PACKET_ENABLE
;
1186 case PACKET_DISABLE
:
1187 internal_error (__FILE__
, __LINE__
,
1188 _("packet_ok: attempt to use a disabled packet"));
1194 case PACKET_UNKNOWN
:
1195 /* The stub does not support the packet. */
1196 switch (config
->support
)
1199 if (config
->detect
== AUTO_BOOLEAN_AUTO
)
1200 /* If the stub previously indicated that the packet was
1201 supported then there is a protocol error.. */
1202 error (_("Protocol error: %s (%s) conflicting enabled responses."),
1203 config
->name
, config
->title
);
1205 /* The user set it wrong. */
1206 error (_("Enabled packet %s (%s) not recognized by stub"),
1207 config
->name
, config
->title
);
1209 case PACKET_SUPPORT_UNKNOWN
:
1211 fprintf_unfiltered (gdb_stdlog
,
1212 "Packet %s (%s) is NOT supported\n",
1213 config
->name
, config
->title
);
1214 config
->support
= PACKET_DISABLE
;
1216 case PACKET_DISABLE
:
1238 PACKET_vFile_pwrite
,
1240 PACKET_vFile_unlink
,
1241 PACKET_vFile_readlink
,
1243 PACKET_qXfer_features
,
1244 PACKET_qXfer_libraries
,
1245 PACKET_qXfer_libraries_svr4
,
1246 PACKET_qXfer_memory_map
,
1247 PACKET_qXfer_spu_read
,
1248 PACKET_qXfer_spu_write
,
1249 PACKET_qXfer_osdata
,
1250 PACKET_qXfer_threads
,
1251 PACKET_qXfer_statictrace_read
,
1252 PACKET_qXfer_traceframe_info
,
1256 PACKET_QPassSignals
,
1257 PACKET_qSearch_memory
,
1260 PACKET_QStartNoAckMode
,
1262 PACKET_qXfer_siginfo_read
,
1263 PACKET_qXfer_siginfo_write
,
1265 PACKET_ConditionalTracepoints
,
1266 PACKET_FastTracepoints
,
1267 PACKET_StaticTracepoints
,
1268 PACKET_InstallInTrace
,
1271 PACKET_TracepointSource
,
1274 PACKET_QDisableRandomization
,
1278 static struct packet_config remote_protocol_packets
[PACKET_MAX
];
1281 set_remote_protocol_packet_cmd (char *args
, int from_tty
,
1282 struct cmd_list_element
*c
)
1284 struct packet_config
*packet
;
1286 for (packet
= remote_protocol_packets
;
1287 packet
< &remote_protocol_packets
[PACKET_MAX
];
1290 if (&packet
->detect
== c
->var
)
1292 update_packet_config (packet
);
1296 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1301 show_remote_protocol_packet_cmd (struct ui_file
*file
, int from_tty
,
1302 struct cmd_list_element
*c
,
1305 struct packet_config
*packet
;
1307 for (packet
= remote_protocol_packets
;
1308 packet
< &remote_protocol_packets
[PACKET_MAX
];
1311 if (&packet
->detect
== c
->var
)
1313 show_packet_config_cmd (packet
);
1317 internal_error (__FILE__
, __LINE__
, _("Could not find config for %s"),
1321 /* Should we try one of the 'Z' requests? */
1325 Z_PACKET_SOFTWARE_BP
,
1326 Z_PACKET_HARDWARE_BP
,
1333 /* For compatibility with older distributions. Provide a ``set remote
1334 Z-packet ...'' command that updates all the Z packet types. */
1336 static enum auto_boolean remote_Z_packet_detect
;
1339 set_remote_protocol_Z_packet_cmd (char *args
, int from_tty
,
1340 struct cmd_list_element
*c
)
1344 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1346 remote_protocol_packets
[PACKET_Z0
+ i
].detect
= remote_Z_packet_detect
;
1347 update_packet_config (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1352 show_remote_protocol_Z_packet_cmd (struct ui_file
*file
, int from_tty
,
1353 struct cmd_list_element
*c
,
1358 for (i
= 0; i
< NR_Z_PACKET_TYPES
; i
++)
1360 show_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
+ i
]);
1364 /* Should we try the 'ThreadInfo' query packet?
1366 This variable (NOT available to the user: auto-detect only!)
1367 determines whether GDB will use the new, simpler "ThreadInfo"
1368 query or the older, more complex syntax for thread queries.
1369 This is an auto-detect variable (set to true at each connect,
1370 and set to false when the target fails to recognize it). */
1372 static int use_threadinfo_query
;
1373 static int use_threadextra_query
;
1375 /* Tokens for use by the asynchronous signal handlers for SIGINT. */
1376 static struct async_signal_handler
*sigint_remote_twice_token
;
1377 static struct async_signal_handler
*sigint_remote_token
;
1380 /* Asynchronous signal handle registered as event loop source for
1381 when we have pending events ready to be passed to the core. */
1383 static struct async_event_handler
*remote_async_inferior_event_token
;
1385 /* Asynchronous signal handle registered as event loop source for when
1386 the remote sent us a %Stop notification. The registered callback
1387 will do a vStopped sequence to pull the rest of the events out of
1388 the remote side into our event queue. */
1390 static struct async_event_handler
*remote_async_get_pending_events_token
;
1393 static ptid_t magic_null_ptid
;
1394 static ptid_t not_sent_ptid
;
1395 static ptid_t any_thread_ptid
;
1397 /* These are the threads which we last sent to the remote system. The
1398 TID member will be -1 for all or -2 for not sent yet. */
1400 static ptid_t general_thread
;
1401 static ptid_t continue_thread
;
1403 /* This the traceframe which we last selected on the remote system.
1404 It will be -1 if no traceframe is selected. */
1405 static int remote_traceframe_number
= -1;
1407 /* Find out if the stub attached to PID (and hence GDB should offer to
1408 detach instead of killing it when bailing out). */
1411 remote_query_attached (int pid
)
1413 struct remote_state
*rs
= get_remote_state ();
1415 if (remote_protocol_packets
[PACKET_qAttached
].support
== PACKET_DISABLE
)
1418 if (remote_multi_process_p (rs
))
1419 sprintf (rs
->buf
, "qAttached:%x", pid
);
1421 sprintf (rs
->buf
, "qAttached");
1424 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1426 switch (packet_ok (rs
->buf
,
1427 &remote_protocol_packets
[PACKET_qAttached
]))
1430 if (strcmp (rs
->buf
, "1") == 0)
1434 warning (_("Remote failure reply: %s"), rs
->buf
);
1436 case PACKET_UNKNOWN
:
1443 /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID
1444 has been invented by GDB, instead of reported by the target. Since
1445 we can be connected to a remote system before before knowing about
1446 any inferior, mark the target with execution when we find the first
1447 inferior. If ATTACHED is 1, then we had just attached to this
1448 inferior. If it is 0, then we just created this inferior. If it
1449 is -1, then try querying the remote stub to find out if it had
1450 attached to the inferior or not. */
1452 static struct inferior
*
1453 remote_add_inferior (int fake_pid_p
, int pid
, int attached
)
1455 struct inferior
*inf
;
1457 /* Check whether this process we're learning about is to be
1458 considered attached, or if is to be considered to have been
1459 spawned by the stub. */
1461 attached
= remote_query_attached (pid
);
1463 if (gdbarch_has_global_solist (target_gdbarch
))
1465 /* If the target shares code across all inferiors, then every
1466 attach adds a new inferior. */
1467 inf
= add_inferior (pid
);
1469 /* ... and every inferior is bound to the same program space.
1470 However, each inferior may still have its own address
1472 inf
->aspace
= maybe_new_address_space ();
1473 inf
->pspace
= current_program_space
;
1477 /* In the traditional debugging scenario, there's a 1-1 match
1478 between program/address spaces. We simply bind the inferior
1479 to the program space's address space. */
1480 inf
= current_inferior ();
1481 inferior_appeared (inf
, pid
);
1484 inf
->attach_flag
= attached
;
1485 inf
->fake_pid_p
= fake_pid_p
;
1490 /* Add thread PTID to GDB's thread list. Tag it as executing/running
1491 according to RUNNING. */
1494 remote_add_thread (ptid_t ptid
, int running
)
1498 set_executing (ptid
, running
);
1499 set_running (ptid
, running
);
1502 /* Come here when we learn about a thread id from the remote target.
1503 It may be the first time we hear about such thread, so take the
1504 opportunity to add it to GDB's thread list. In case this is the
1505 first time we're noticing its corresponding inferior, add it to
1506 GDB's inferior list as well. */
1509 remote_notice_new_inferior (ptid_t currthread
, int running
)
1511 /* If this is a new thread, add it to GDB's thread list.
1512 If we leave it up to WFI to do this, bad things will happen. */
1514 if (in_thread_list (currthread
) && is_exited (currthread
))
1516 /* We're seeing an event on a thread id we knew had exited.
1517 This has to be a new thread reusing the old id. Add it. */
1518 remote_add_thread (currthread
, running
);
1522 if (!in_thread_list (currthread
))
1524 struct inferior
*inf
= NULL
;
1525 int pid
= ptid_get_pid (currthread
);
1527 if (ptid_is_pid (inferior_ptid
)
1528 && pid
== ptid_get_pid (inferior_ptid
))
1530 /* inferior_ptid has no thread member yet. This can happen
1531 with the vAttach -> remote_wait,"TAAthread:" path if the
1532 stub doesn't support qC. This is the first stop reported
1533 after an attach, so this is the main thread. Update the
1534 ptid in the thread list. */
1535 if (in_thread_list (pid_to_ptid (pid
)))
1536 thread_change_ptid (inferior_ptid
, currthread
);
1539 remote_add_thread (currthread
, running
);
1540 inferior_ptid
= currthread
;
1545 if (ptid_equal (magic_null_ptid
, inferior_ptid
))
1547 /* inferior_ptid is not set yet. This can happen with the
1548 vRun -> remote_wait,"TAAthread:" path if the stub
1549 doesn't support qC. This is the first stop reported
1550 after an attach, so this is the main thread. Update the
1551 ptid in the thread list. */
1552 thread_change_ptid (inferior_ptid
, currthread
);
1556 /* When connecting to a target remote, or to a target
1557 extended-remote which already was debugging an inferior, we
1558 may not know about it yet. Add it before adding its child
1559 thread, so notifications are emitted in a sensible order. */
1560 if (!in_inferior_list (ptid_get_pid (currthread
)))
1562 struct remote_state
*rs
= get_remote_state ();
1563 int fake_pid_p
= !remote_multi_process_p (rs
);
1565 inf
= remote_add_inferior (fake_pid_p
,
1566 ptid_get_pid (currthread
), -1);
1569 /* This is really a new thread. Add it. */
1570 remote_add_thread (currthread
, running
);
1572 /* If we found a new inferior, let the common code do whatever
1573 it needs to with it (e.g., read shared libraries, insert
1576 notice_new_inferior (currthread
, running
, 0);
1580 /* Return the private thread data, creating it if necessary. */
1582 struct private_thread_info
*
1583 demand_private_info (ptid_t ptid
)
1585 struct thread_info
*info
= find_thread_ptid (ptid
);
1591 info
->private = xmalloc (sizeof (*(info
->private)));
1592 info
->private_dtor
= free_private_thread_info
;
1593 info
->private->core
= -1;
1594 info
->private->extra
= 0;
1597 return info
->private;
1600 /* Call this function as a result of
1601 1) A halt indication (T packet) containing a thread id
1602 2) A direct query of currthread
1603 3) Successful execution of set thread */
1606 record_currthread (ptid_t currthread
)
1608 general_thread
= currthread
;
1611 static char *last_pass_packet
;
1613 /* If 'QPassSignals' is supported, tell the remote stub what signals
1614 it can simply pass through to the inferior without reporting. */
1617 remote_pass_signals (int numsigs
, unsigned char *pass_signals
)
1619 if (remote_protocol_packets
[PACKET_QPassSignals
].support
!= PACKET_DISABLE
)
1621 char *pass_packet
, *p
;
1624 gdb_assert (numsigs
< 256);
1625 for (i
= 0; i
< numsigs
; i
++)
1627 if (pass_signals
[i
])
1630 pass_packet
= xmalloc (count
* 3 + strlen ("QPassSignals:") + 1);
1631 strcpy (pass_packet
, "QPassSignals:");
1632 p
= pass_packet
+ strlen (pass_packet
);
1633 for (i
= 0; i
< numsigs
; i
++)
1635 if (pass_signals
[i
])
1638 *p
++ = tohex (i
>> 4);
1639 *p
++ = tohex (i
& 15);
1648 if (!last_pass_packet
|| strcmp (last_pass_packet
, pass_packet
))
1650 struct remote_state
*rs
= get_remote_state ();
1651 char *buf
= rs
->buf
;
1653 putpkt (pass_packet
);
1654 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1655 packet_ok (buf
, &remote_protocol_packets
[PACKET_QPassSignals
]);
1656 if (last_pass_packet
)
1657 xfree (last_pass_packet
);
1658 last_pass_packet
= pass_packet
;
1661 xfree (pass_packet
);
1665 /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is
1666 MINUS_ONE_PTID, set the thread to -1, so the stub returns the
1667 thread. If GEN is set, set the general thread, if not, then set
1668 the step/continue thread. */
1670 set_thread (struct ptid ptid
, int gen
)
1672 struct remote_state
*rs
= get_remote_state ();
1673 ptid_t state
= gen
? general_thread
: continue_thread
;
1674 char *buf
= rs
->buf
;
1675 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
1677 if (ptid_equal (state
, ptid
))
1681 *buf
++ = gen
? 'g' : 'c';
1682 if (ptid_equal (ptid
, magic_null_ptid
))
1683 xsnprintf (buf
, endbuf
- buf
, "0");
1684 else if (ptid_equal (ptid
, any_thread_ptid
))
1685 xsnprintf (buf
, endbuf
- buf
, "0");
1686 else if (ptid_equal (ptid
, minus_one_ptid
))
1687 xsnprintf (buf
, endbuf
- buf
, "-1");
1689 write_ptid (buf
, endbuf
, ptid
);
1691 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1693 general_thread
= ptid
;
1695 continue_thread
= ptid
;
1699 set_general_thread (struct ptid ptid
)
1701 set_thread (ptid
, 1);
1705 set_continue_thread (struct ptid ptid
)
1707 set_thread (ptid
, 0);
1710 /* Change the remote current process. Which thread within the process
1711 ends up selected isn't important, as long as it is the same process
1712 as what INFERIOR_PTID points to.
1714 This comes from that fact that there is no explicit notion of
1715 "selected process" in the protocol. The selected process for
1716 general operations is the process the selected general thread
1720 set_general_process (void)
1722 struct remote_state
*rs
= get_remote_state ();
1724 /* If the remote can't handle multiple processes, don't bother. */
1725 if (!rs
->extended
|| !remote_multi_process_p (rs
))
1728 /* We only need to change the remote current thread if it's pointing
1729 at some other process. */
1730 if (ptid_get_pid (general_thread
) != ptid_get_pid (inferior_ptid
))
1731 set_general_thread (inferior_ptid
);
1735 /* Return nonzero if the thread PTID is still alive on the remote
1739 remote_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
1741 struct remote_state
*rs
= get_remote_state ();
1744 if (ptid_equal (ptid
, magic_null_ptid
))
1745 /* The main thread is always alive. */
1748 if (ptid_get_pid (ptid
) != 0 && ptid_get_tid (ptid
) == 0)
1749 /* The main thread is always alive. This can happen after a
1750 vAttach, if the remote side doesn't support
1755 endp
= rs
->buf
+ get_remote_packet_size ();
1758 write_ptid (p
, endp
, ptid
);
1761 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
1762 return (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K');
1765 /* About these extended threadlist and threadinfo packets. They are
1766 variable length packets but, the fields within them are often fixed
1767 length. They are redundent enough to send over UDP as is the
1768 remote protocol in general. There is a matching unit test module
1771 #define OPAQUETHREADBYTES 8
1773 /* a 64 bit opaque identifier */
1774 typedef unsigned char threadref
[OPAQUETHREADBYTES
];
1776 /* WARNING: This threadref data structure comes from the remote O.S.,
1777 libstub protocol encoding, and remote.c. It is not particularly
1780 /* Right now, the internal structure is int. We want it to be bigger.
1781 Plan to fix this. */
1783 typedef int gdb_threadref
; /* Internal GDB thread reference. */
1785 /* gdb_ext_thread_info is an internal GDB data structure which is
1786 equivalent to the reply of the remote threadinfo packet. */
1788 struct gdb_ext_thread_info
1790 threadref threadid
; /* External form of thread reference. */
1791 int active
; /* Has state interesting to GDB?
1793 char display
[256]; /* Brief state display, name,
1794 blocked/suspended. */
1795 char shortname
[32]; /* To be used to name threads. */
1796 char more_display
[256]; /* Long info, statistics, queue depth,
1800 /* The volume of remote transfers can be limited by submitting
1801 a mask containing bits specifying the desired information.
1802 Use a union of these values as the 'selection' parameter to
1803 get_thread_info. FIXME: Make these TAG names more thread specific. */
1805 #define TAG_THREADID 1
1806 #define TAG_EXISTS 2
1807 #define TAG_DISPLAY 4
1808 #define TAG_THREADNAME 8
1809 #define TAG_MOREDISPLAY 16
1811 #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2)
1813 char *unpack_varlen_hex (char *buff
, ULONGEST
*result
);
1815 static char *unpack_nibble (char *buf
, int *val
);
1817 static char *pack_nibble (char *buf
, int nibble
);
1819 static char *pack_hex_byte (char *pkt
, int /* unsigned char */ byte
);
1821 static char *unpack_byte (char *buf
, int *value
);
1823 static char *pack_int (char *buf
, int value
);
1825 static char *unpack_int (char *buf
, int *value
);
1827 static char *unpack_string (char *src
, char *dest
, int length
);
1829 static char *pack_threadid (char *pkt
, threadref
*id
);
1831 static char *unpack_threadid (char *inbuf
, threadref
*id
);
1833 void int_to_threadref (threadref
*id
, int value
);
1835 static int threadref_to_int (threadref
*ref
);
1837 static void copy_threadref (threadref
*dest
, threadref
*src
);
1839 static int threadmatch (threadref
*dest
, threadref
*src
);
1841 static char *pack_threadinfo_request (char *pkt
, int mode
,
1844 static int remote_unpack_thread_info_response (char *pkt
,
1845 threadref
*expectedref
,
1846 struct gdb_ext_thread_info
1850 static int remote_get_threadinfo (threadref
*threadid
,
1851 int fieldset
, /*TAG mask */
1852 struct gdb_ext_thread_info
*info
);
1854 static char *pack_threadlist_request (char *pkt
, int startflag
,
1856 threadref
*nextthread
);
1858 static int parse_threadlist_response (char *pkt
,
1860 threadref
*original_echo
,
1861 threadref
*resultlist
,
1864 static int remote_get_threadlist (int startflag
,
1865 threadref
*nextthread
,
1869 threadref
*threadlist
);
1871 typedef int (*rmt_thread_action
) (threadref
*ref
, void *context
);
1873 static int remote_threadlist_iterator (rmt_thread_action stepfunction
,
1874 void *context
, int looplimit
);
1876 static int remote_newthread_step (threadref
*ref
, void *context
);
1879 /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the
1880 buffer we're allowed to write to. Returns
1881 BUF+CHARACTERS_WRITTEN. */
1884 write_ptid (char *buf
, const char *endbuf
, ptid_t ptid
)
1887 struct remote_state
*rs
= get_remote_state ();
1889 if (remote_multi_process_p (rs
))
1891 pid
= ptid_get_pid (ptid
);
1893 buf
+= xsnprintf (buf
, endbuf
- buf
, "p-%x.", -pid
);
1895 buf
+= xsnprintf (buf
, endbuf
- buf
, "p%x.", pid
);
1897 tid
= ptid_get_tid (ptid
);
1899 buf
+= xsnprintf (buf
, endbuf
- buf
, "-%x", -tid
);
1901 buf
+= xsnprintf (buf
, endbuf
- buf
, "%x", tid
);
1906 /* Extract a PTID from BUF. If non-null, OBUF is set to the to one
1907 passed the last parsed char. Returns null_ptid on error. */
1910 read_ptid (char *buf
, char **obuf
)
1914 ULONGEST pid
= 0, tid
= 0;
1918 /* Multi-process ptid. */
1919 pp
= unpack_varlen_hex (p
+ 1, &pid
);
1921 error (_("invalid remote ptid: %s"), p
);
1924 pp
= unpack_varlen_hex (p
+ 1, &tid
);
1927 return ptid_build (pid
, 0, tid
);
1930 /* No multi-process. Just a tid. */
1931 pp
= unpack_varlen_hex (p
, &tid
);
1933 /* Since the stub is not sending a process id, then default to
1934 what's in inferior_ptid, unless it's null at this point. If so,
1935 then since there's no way to know the pid of the reported
1936 threads, use the magic number. */
1937 if (ptid_equal (inferior_ptid
, null_ptid
))
1938 pid
= ptid_get_pid (magic_null_ptid
);
1940 pid
= ptid_get_pid (inferior_ptid
);
1944 return ptid_build (pid
, 0, tid
);
1947 /* Encode 64 bits in 16 chars of hex. */
1949 static const char hexchars
[] = "0123456789abcdef";
1952 ishex (int ch
, int *val
)
1954 if ((ch
>= 'a') && (ch
<= 'f'))
1956 *val
= ch
- 'a' + 10;
1959 if ((ch
>= 'A') && (ch
<= 'F'))
1961 *val
= ch
- 'A' + 10;
1964 if ((ch
>= '0') && (ch
<= '9'))
1975 if (ch
>= 'a' && ch
<= 'f')
1976 return ch
- 'a' + 10;
1977 if (ch
>= '0' && ch
<= '9')
1979 if (ch
>= 'A' && ch
<= 'F')
1980 return ch
- 'A' + 10;
1985 stub_unpack_int (char *buff
, int fieldlength
)
1992 nibble
= stubhex (*buff
++);
1996 retval
= retval
<< 4;
2002 unpack_varlen_hex (char *buff
, /* packet to parse */
2006 ULONGEST retval
= 0;
2008 while (ishex (*buff
, &nibble
))
2011 retval
= retval
<< 4;
2012 retval
|= nibble
& 0x0f;
2019 unpack_nibble (char *buf
, int *val
)
2021 *val
= fromhex (*buf
++);
2026 pack_nibble (char *buf
, int nibble
)
2028 *buf
++ = hexchars
[(nibble
& 0x0f)];
2033 pack_hex_byte (char *pkt
, int byte
)
2035 *pkt
++ = hexchars
[(byte
>> 4) & 0xf];
2036 *pkt
++ = hexchars
[(byte
& 0xf)];
2041 unpack_byte (char *buf
, int *value
)
2043 *value
= stub_unpack_int (buf
, 2);
2048 pack_int (char *buf
, int value
)
2050 buf
= pack_hex_byte (buf
, (value
>> 24) & 0xff);
2051 buf
= pack_hex_byte (buf
, (value
>> 16) & 0xff);
2052 buf
= pack_hex_byte (buf
, (value
>> 8) & 0x0ff);
2053 buf
= pack_hex_byte (buf
, (value
& 0xff));
2058 unpack_int (char *buf
, int *value
)
2060 *value
= stub_unpack_int (buf
, 8);
2064 #if 0 /* Currently unused, uncomment when needed. */
2065 static char *pack_string (char *pkt
, char *string
);
2068 pack_string (char *pkt
, char *string
)
2073 len
= strlen (string
);
2075 len
= 200; /* Bigger than most GDB packets, junk??? */
2076 pkt
= pack_hex_byte (pkt
, len
);
2080 if ((ch
== '\0') || (ch
== '#'))
2081 ch
= '*'; /* Protect encapsulation. */
2086 #endif /* 0 (unused) */
2089 unpack_string (char *src
, char *dest
, int length
)
2098 pack_threadid (char *pkt
, threadref
*id
)
2101 unsigned char *altid
;
2103 altid
= (unsigned char *) id
;
2104 limit
= pkt
+ BUF_THREAD_ID_SIZE
;
2106 pkt
= pack_hex_byte (pkt
, *altid
++);
2112 unpack_threadid (char *inbuf
, threadref
*id
)
2115 char *limit
= inbuf
+ BUF_THREAD_ID_SIZE
;
2118 altref
= (char *) id
;
2120 while (inbuf
< limit
)
2122 x
= stubhex (*inbuf
++);
2123 y
= stubhex (*inbuf
++);
2124 *altref
++ = (x
<< 4) | y
;
2129 /* Externally, threadrefs are 64 bits but internally, they are still
2130 ints. This is due to a mismatch of specifications. We would like
2131 to use 64bit thread references internally. This is an adapter
2135 int_to_threadref (threadref
*id
, int value
)
2137 unsigned char *scan
;
2139 scan
= (unsigned char *) id
;
2145 *scan
++ = (value
>> 24) & 0xff;
2146 *scan
++ = (value
>> 16) & 0xff;
2147 *scan
++ = (value
>> 8) & 0xff;
2148 *scan
++ = (value
& 0xff);
2152 threadref_to_int (threadref
*ref
)
2155 unsigned char *scan
;
2161 value
= (value
<< 8) | ((*scan
++) & 0xff);
2166 copy_threadref (threadref
*dest
, threadref
*src
)
2169 unsigned char *csrc
, *cdest
;
2171 csrc
= (unsigned char *) src
;
2172 cdest
= (unsigned char *) dest
;
2179 threadmatch (threadref
*dest
, threadref
*src
)
2181 /* Things are broken right now, so just assume we got a match. */
2183 unsigned char *srcp
, *destp
;
2185 srcp
= (char *) src
;
2186 destp
= (char *) dest
;
2190 result
&= (*srcp
++ == *destp
++) ? 1 : 0;
2197 threadid:1, # always request threadid
2204 /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */
2207 pack_threadinfo_request (char *pkt
, int mode
, threadref
*id
)
2209 *pkt
++ = 'q'; /* Info Query */
2210 *pkt
++ = 'P'; /* process or thread info */
2211 pkt
= pack_int (pkt
, mode
); /* mode */
2212 pkt
= pack_threadid (pkt
, id
); /* threadid */
2213 *pkt
= '\0'; /* terminate */
2217 /* These values tag the fields in a thread info response packet. */
2218 /* Tagging the fields allows us to request specific fields and to
2219 add more fields as time goes by. */
2221 #define TAG_THREADID 1 /* Echo the thread identifier. */
2222 #define TAG_EXISTS 2 /* Is this process defined enough to
2223 fetch registers and its stack? */
2224 #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */
2225 #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */
2226 #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about
2230 remote_unpack_thread_info_response (char *pkt
, threadref
*expectedref
,
2231 struct gdb_ext_thread_info
*info
)
2233 struct remote_state
*rs
= get_remote_state ();
2237 char *limit
= pkt
+ rs
->buf_size
; /* Plausible parsing limit. */
2240 /* info->threadid = 0; FIXME: implement zero_threadref. */
2242 info
->display
[0] = '\0';
2243 info
->shortname
[0] = '\0';
2244 info
->more_display
[0] = '\0';
2246 /* Assume the characters indicating the packet type have been
2248 pkt
= unpack_int (pkt
, &mask
); /* arg mask */
2249 pkt
= unpack_threadid (pkt
, &ref
);
2252 warning (_("Incomplete response to threadinfo request."));
2253 if (!threadmatch (&ref
, expectedref
))
2254 { /* This is an answer to a different request. */
2255 warning (_("ERROR RMT Thread info mismatch."));
2258 copy_threadref (&info
->threadid
, &ref
);
2260 /* Loop on tagged fields , try to bail if somthing goes wrong. */
2262 /* Packets are terminated with nulls. */
2263 while ((pkt
< limit
) && mask
&& *pkt
)
2265 pkt
= unpack_int (pkt
, &tag
); /* tag */
2266 pkt
= unpack_byte (pkt
, &length
); /* length */
2267 if (!(tag
& mask
)) /* Tags out of synch with mask. */
2269 warning (_("ERROR RMT: threadinfo tag mismatch."));
2273 if (tag
== TAG_THREADID
)
2277 warning (_("ERROR RMT: length of threadid is not 16."));
2281 pkt
= unpack_threadid (pkt
, &ref
);
2282 mask
= mask
& ~TAG_THREADID
;
2285 if (tag
== TAG_EXISTS
)
2287 info
->active
= stub_unpack_int (pkt
, length
);
2289 mask
= mask
& ~(TAG_EXISTS
);
2292 warning (_("ERROR RMT: 'exists' length too long."));
2298 if (tag
== TAG_THREADNAME
)
2300 pkt
= unpack_string (pkt
, &info
->shortname
[0], length
);
2301 mask
= mask
& ~TAG_THREADNAME
;
2304 if (tag
== TAG_DISPLAY
)
2306 pkt
= unpack_string (pkt
, &info
->display
[0], length
);
2307 mask
= mask
& ~TAG_DISPLAY
;
2310 if (tag
== TAG_MOREDISPLAY
)
2312 pkt
= unpack_string (pkt
, &info
->more_display
[0], length
);
2313 mask
= mask
& ~TAG_MOREDISPLAY
;
2316 warning (_("ERROR RMT: unknown thread info tag."));
2317 break; /* Not a tag we know about. */
2323 remote_get_threadinfo (threadref
*threadid
, int fieldset
, /* TAG mask */
2324 struct gdb_ext_thread_info
*info
)
2326 struct remote_state
*rs
= get_remote_state ();
2329 pack_threadinfo_request (rs
->buf
, fieldset
, threadid
);
2331 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2333 if (rs
->buf
[0] == '\0')
2336 result
= remote_unpack_thread_info_response (rs
->buf
+ 2,
2341 /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */
2344 pack_threadlist_request (char *pkt
, int startflag
, int threadcount
,
2345 threadref
*nextthread
)
2347 *pkt
++ = 'q'; /* info query packet */
2348 *pkt
++ = 'L'; /* Process LIST or threadLIST request */
2349 pkt
= pack_nibble (pkt
, startflag
); /* initflag 1 bytes */
2350 pkt
= pack_hex_byte (pkt
, threadcount
); /* threadcount 2 bytes */
2351 pkt
= pack_threadid (pkt
, nextthread
); /* 64 bit thread identifier */
2356 /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */
2359 parse_threadlist_response (char *pkt
, int result_limit
,
2360 threadref
*original_echo
, threadref
*resultlist
,
2363 struct remote_state
*rs
= get_remote_state ();
2365 int count
, resultcount
, done
;
2368 /* Assume the 'q' and 'M chars have been stripped. */
2369 limit
= pkt
+ (rs
->buf_size
- BUF_THREAD_ID_SIZE
);
2370 /* done parse past here */
2371 pkt
= unpack_byte (pkt
, &count
); /* count field */
2372 pkt
= unpack_nibble (pkt
, &done
);
2373 /* The first threadid is the argument threadid. */
2374 pkt
= unpack_threadid (pkt
, original_echo
); /* should match query packet */
2375 while ((count
-- > 0) && (pkt
< limit
))
2377 pkt
= unpack_threadid (pkt
, resultlist
++);
2378 if (resultcount
++ >= result_limit
)
2387 remote_get_threadlist (int startflag
, threadref
*nextthread
, int result_limit
,
2388 int *done
, int *result_count
, threadref
*threadlist
)
2390 struct remote_state
*rs
= get_remote_state ();
2391 static threadref echo_nextthread
;
2394 /* Trancate result limit to be smaller than the packet size. */
2395 if ((((result_limit
+ 1) * BUF_THREAD_ID_SIZE
) + 10)
2396 >= get_remote_packet_size ())
2397 result_limit
= (get_remote_packet_size () / BUF_THREAD_ID_SIZE
) - 2;
2399 pack_threadlist_request (rs
->buf
, startflag
, result_limit
, nextthread
);
2401 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2403 if (*rs
->buf
== '\0')
2407 parse_threadlist_response (rs
->buf
+ 2, result_limit
, &echo_nextthread
,
2410 if (!threadmatch (&echo_nextthread
, nextthread
))
2412 /* FIXME: This is a good reason to drop the packet. */
2413 /* Possably, there is a duplicate response. */
2415 retransmit immediatly - race conditions
2416 retransmit after timeout - yes
2418 wait for packet, then exit
2420 warning (_("HMM: threadlist did not echo arg thread, dropping it."));
2421 return 0; /* I choose simply exiting. */
2423 if (*result_count
<= 0)
2427 warning (_("RMT ERROR : failed to get remote thread list."));
2430 return result
; /* break; */
2432 if (*result_count
> result_limit
)
2435 warning (_("RMT ERROR: threadlist response longer than requested."));
2441 /* This is the interface between remote and threads, remotes upper
2444 /* remote_find_new_threads retrieves the thread list and for each
2445 thread in the list, looks up the thread in GDB's internal list,
2446 adding the thread if it does not already exist. This involves
2447 getting partial thread lists from the remote target so, polling the
2448 quit_flag is required. */
2451 /* About this many threadisds fit in a packet. */
2453 #define MAXTHREADLISTRESULTS 32
2456 remote_threadlist_iterator (rmt_thread_action stepfunction
, void *context
,
2459 int done
, i
, result_count
;
2463 static threadref nextthread
;
2464 static threadref resultthreadlist
[MAXTHREADLISTRESULTS
];
2469 if (loopcount
++ > looplimit
)
2472 warning (_("Remote fetch threadlist -infinite loop-."));
2475 if (!remote_get_threadlist (startflag
, &nextthread
, MAXTHREADLISTRESULTS
,
2476 &done
, &result_count
, resultthreadlist
))
2481 /* Clear for later iterations. */
2483 /* Setup to resume next batch of thread references, set nextthread. */
2484 if (result_count
>= 1)
2485 copy_threadref (&nextthread
, &resultthreadlist
[result_count
- 1]);
2487 while (result_count
--)
2488 if (!(result
= (*stepfunction
) (&resultthreadlist
[i
++], context
)))
2495 remote_newthread_step (threadref
*ref
, void *context
)
2497 int pid
= ptid_get_pid (inferior_ptid
);
2498 ptid_t ptid
= ptid_build (pid
, 0, threadref_to_int (ref
));
2500 if (!in_thread_list (ptid
))
2502 return 1; /* continue iterator */
2505 #define CRAZY_MAX_THREADS 1000
2508 remote_current_thread (ptid_t oldpid
)
2510 struct remote_state
*rs
= get_remote_state ();
2513 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2514 if (rs
->buf
[0] == 'Q' && rs
->buf
[1] == 'C')
2515 return read_ptid (&rs
->buf
[2], NULL
);
2520 /* Find new threads for info threads command.
2521 * Original version, using John Metzler's thread protocol.
2525 remote_find_new_threads (void)
2527 remote_threadlist_iterator (remote_newthread_step
, 0,
2531 #if defined(HAVE_LIBEXPAT)
2533 typedef struct thread_item
2539 DEF_VEC_O(thread_item_t
);
2541 struct threads_parsing_context
2543 VEC (thread_item_t
) *items
;
2547 start_thread (struct gdb_xml_parser
*parser
,
2548 const struct gdb_xml_element
*element
,
2549 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
2551 struct threads_parsing_context
*data
= user_data
;
2553 struct thread_item item
;
2555 struct gdb_xml_value
*attr
;
2557 id
= xml_find_attribute (attributes
, "id")->value
;
2558 item
.ptid
= read_ptid (id
, NULL
);
2560 attr
= xml_find_attribute (attributes
, "core");
2562 item
.core
= *(ULONGEST
*) attr
->value
;
2568 VEC_safe_push (thread_item_t
, data
->items
, &item
);
2572 end_thread (struct gdb_xml_parser
*parser
,
2573 const struct gdb_xml_element
*element
,
2574 void *user_data
, const char *body_text
)
2576 struct threads_parsing_context
*data
= user_data
;
2578 if (body_text
&& *body_text
)
2579 VEC_last (thread_item_t
, data
->items
)->extra
= xstrdup (body_text
);
2582 const struct gdb_xml_attribute thread_attributes
[] = {
2583 { "id", GDB_XML_AF_NONE
, NULL
, NULL
},
2584 { "core", GDB_XML_AF_OPTIONAL
, gdb_xml_parse_attr_ulongest
, NULL
},
2585 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
2588 const struct gdb_xml_element thread_children
[] = {
2589 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2592 const struct gdb_xml_element threads_children
[] = {
2593 { "thread", thread_attributes
, thread_children
,
2594 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
2595 start_thread
, end_thread
},
2596 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2599 const struct gdb_xml_element threads_elements
[] = {
2600 { "threads", NULL
, threads_children
,
2601 GDB_XML_EF_NONE
, NULL
, NULL
},
2602 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
2605 /* Discard the contents of the constructed thread info context. */
2608 clear_threads_parsing_context (void *p
)
2610 struct threads_parsing_context
*context
= p
;
2612 struct thread_item
*item
;
2614 for (i
= 0; VEC_iterate (thread_item_t
, context
->items
, i
, item
); ++i
)
2615 xfree (item
->extra
);
2617 VEC_free (thread_item_t
, context
->items
);
2623 * Find all threads for info threads command.
2624 * Uses new thread protocol contributed by Cisco.
2625 * Falls back and attempts to use the older method (above)
2626 * if the target doesn't respond to the new method.
2630 remote_threads_info (struct target_ops
*ops
)
2632 struct remote_state
*rs
= get_remote_state ();
2636 if (remote_desc
== 0) /* paranoia */
2637 error (_("Command can only be used when connected to the remote target."));
2639 #if defined(HAVE_LIBEXPAT)
2640 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2642 char *xml
= target_read_stralloc (¤t_target
,
2643 TARGET_OBJECT_THREADS
, NULL
);
2645 struct cleanup
*back_to
= make_cleanup (xfree
, xml
);
2649 struct threads_parsing_context context
;
2651 context
.items
= NULL
;
2652 make_cleanup (clear_threads_parsing_context
, &context
);
2654 if (gdb_xml_parse_quick (_("threads"), "threads.dtd",
2655 threads_elements
, xml
, &context
) == 0)
2658 struct thread_item
*item
;
2661 VEC_iterate (thread_item_t
, context
.items
, i
, item
);
2664 if (!ptid_equal (item
->ptid
, null_ptid
))
2666 struct private_thread_info
*info
;
2667 /* In non-stop mode, we assume new found threads
2668 are running until proven otherwise with a
2669 stop reply. In all-stop, we can only get
2670 here if all threads are stopped. */
2671 int running
= non_stop
? 1 : 0;
2673 remote_notice_new_inferior (item
->ptid
, running
);
2675 info
= demand_private_info (item
->ptid
);
2676 info
->core
= item
->core
;
2677 info
->extra
= item
->extra
;
2684 do_cleanups (back_to
);
2689 if (use_threadinfo_query
)
2691 putpkt ("qfThreadInfo");
2692 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2694 if (bufp
[0] != '\0') /* q packet recognized */
2696 while (*bufp
++ == 'm') /* reply contains one or more TID */
2700 new_thread
= read_ptid (bufp
, &bufp
);
2701 if (!ptid_equal (new_thread
, null_ptid
))
2703 /* In non-stop mode, we assume new found threads
2704 are running until proven otherwise with a
2705 stop reply. In all-stop, we can only get
2706 here if all threads are stopped. */
2707 int running
= non_stop
? 1 : 0;
2709 remote_notice_new_inferior (new_thread
, running
);
2712 while (*bufp
++ == ','); /* comma-separated list */
2713 putpkt ("qsThreadInfo");
2714 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2721 /* Only qfThreadInfo is supported in non-stop mode. */
2725 /* Else fall back to old method based on jmetzler protocol. */
2726 use_threadinfo_query
= 0;
2727 remote_find_new_threads ();
2732 * Collect a descriptive string about the given thread.
2733 * The target may say anything it wants to about the thread
2734 * (typically info about its blocked / runnable state, name, etc.).
2735 * This string will appear in the info threads display.
2737 * Optional: targets are not required to implement this function.
2741 remote_threads_extra_info (struct thread_info
*tp
)
2743 struct remote_state
*rs
= get_remote_state ();
2747 struct gdb_ext_thread_info threadinfo
;
2748 static char display_buf
[100]; /* arbitrary... */
2749 int n
= 0; /* position in display_buf */
2751 if (remote_desc
== 0) /* paranoia */
2752 internal_error (__FILE__
, __LINE__
,
2753 _("remote_threads_extra_info"));
2755 if (ptid_equal (tp
->ptid
, magic_null_ptid
)
2756 || (ptid_get_pid (tp
->ptid
) != 0 && ptid_get_tid (tp
->ptid
) == 0))
2757 /* This is the main thread which was added by GDB. The remote
2758 server doesn't know about it. */
2761 if (remote_protocol_packets
[PACKET_qXfer_threads
].support
== PACKET_ENABLE
)
2763 struct thread_info
*info
= find_thread_ptid (tp
->ptid
);
2765 if (info
&& info
->private)
2766 return info
->private->extra
;
2771 if (use_threadextra_query
)
2774 char *endb
= rs
->buf
+ get_remote_packet_size ();
2776 xsnprintf (b
, endb
- b
, "qThreadExtraInfo,");
2778 write_ptid (b
, endb
, tp
->ptid
);
2781 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2782 if (rs
->buf
[0] != 0)
2784 n
= min (strlen (rs
->buf
) / 2, sizeof (display_buf
));
2785 result
= hex2bin (rs
->buf
, (gdb_byte
*) display_buf
, n
);
2786 display_buf
[result
] = '\0';
2791 /* If the above query fails, fall back to the old method. */
2792 use_threadextra_query
= 0;
2793 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
2794 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
2795 int_to_threadref (&id
, ptid_get_tid (tp
->ptid
));
2796 if (remote_get_threadinfo (&id
, set
, &threadinfo
))
2797 if (threadinfo
.active
)
2799 if (*threadinfo
.shortname
)
2800 n
+= xsnprintf (&display_buf
[0], sizeof (display_buf
) - n
,
2801 " Name: %s,", threadinfo
.shortname
);
2802 if (*threadinfo
.display
)
2803 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2804 " State: %s,", threadinfo
.display
);
2805 if (*threadinfo
.more_display
)
2806 n
+= xsnprintf (&display_buf
[n
], sizeof (display_buf
) - n
,
2807 " Priority: %s", threadinfo
.more_display
);
2811 /* For purely cosmetic reasons, clear up trailing commas. */
2812 if (',' == display_buf
[n
-1])
2813 display_buf
[n
-1] = ' ';
2822 remote_static_tracepoint_marker_at (CORE_ADDR addr
,
2823 struct static_tracepoint_marker
*marker
)
2825 struct remote_state
*rs
= get_remote_state ();
2828 sprintf (p
, "qTSTMat:");
2830 p
+= hexnumstr (p
, addr
);
2832 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2836 error (_("Remote failure reply: %s"), p
);
2840 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2848 free_current_marker (void *arg
)
2850 struct static_tracepoint_marker
**marker_p
= arg
;
2852 if (*marker_p
!= NULL
)
2854 release_static_tracepoint_marker (*marker_p
);
2861 static VEC(static_tracepoint_marker_p
) *
2862 remote_static_tracepoint_markers_by_strid (const char *strid
)
2864 struct remote_state
*rs
= get_remote_state ();
2865 VEC(static_tracepoint_marker_p
) *markers
= NULL
;
2866 struct static_tracepoint_marker
*marker
= NULL
;
2867 struct cleanup
*old_chain
;
2870 /* Ask for a first packet of static tracepoint marker
2873 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2876 error (_("Remote failure reply: %s"), p
);
2878 old_chain
= make_cleanup (free_current_marker
, &marker
);
2883 marker
= XCNEW (struct static_tracepoint_marker
);
2887 parse_static_tracepoint_marker_definition (p
, &p
, marker
);
2889 if (strid
== NULL
|| strcmp (strid
, marker
->str_id
) == 0)
2891 VEC_safe_push (static_tracepoint_marker_p
,
2897 release_static_tracepoint_marker (marker
);
2898 memset (marker
, 0, sizeof (*marker
));
2901 while (*p
++ == ','); /* comma-separated list */
2902 /* Ask for another packet of static tracepoint definition. */
2904 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2908 do_cleanups (old_chain
);
2913 /* Implement the to_get_ada_task_ptid function for the remote targets. */
2916 remote_get_ada_task_ptid (long lwp
, long thread
)
2918 return ptid_build (ptid_get_pid (inferior_ptid
), 0, lwp
);
2922 /* Restart the remote side; this is an extended protocol operation. */
2925 extended_remote_restart (void)
2927 struct remote_state
*rs
= get_remote_state ();
2929 /* Send the restart command; for reasons I don't understand the
2930 remote side really expects a number after the "R". */
2931 xsnprintf (rs
->buf
, get_remote_packet_size (), "R%x", 0);
2934 remote_fileio_reset ();
2937 /* Clean up connection to a remote debugger. */
2940 remote_close (int quitting
)
2942 if (remote_desc
== NULL
)
2943 return; /* already closed */
2945 /* Make sure we leave stdin registered in the event loop, and we
2946 don't leave the async SIGINT signal handler installed. */
2947 remote_terminal_ours ();
2949 serial_close (remote_desc
);
2952 /* We don't have a connection to the remote stub anymore. Get rid
2953 of all the inferiors and their threads we were controlling.
2954 Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame
2955 will be unable to find the thread corresponding to (pid, 0, 0). */
2956 inferior_ptid
= null_ptid
;
2957 discard_all_inferiors ();
2959 /* We're no longer interested in any of these events. */
2960 discard_pending_stop_replies (-1);
2962 if (remote_async_inferior_event_token
)
2963 delete_async_event_handler (&remote_async_inferior_event_token
);
2964 if (remote_async_get_pending_events_token
)
2965 delete_async_event_handler (&remote_async_get_pending_events_token
);
2968 /* Query the remote side for the text, data and bss offsets. */
2973 struct remote_state
*rs
= get_remote_state ();
2976 int lose
, num_segments
= 0, do_sections
, do_segments
;
2977 CORE_ADDR text_addr
, data_addr
, bss_addr
, segments
[2];
2978 struct section_offsets
*offs
;
2979 struct symfile_segment_data
*data
;
2981 if (symfile_objfile
== NULL
)
2984 putpkt ("qOffsets");
2985 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
2988 if (buf
[0] == '\000')
2989 return; /* Return silently. Stub doesn't support
2993 warning (_("Remote failure reply: %s"), buf
);
2997 /* Pick up each field in turn. This used to be done with scanf, but
2998 scanf will make trouble if CORE_ADDR size doesn't match
2999 conversion directives correctly. The following code will work
3000 with any size of CORE_ADDR. */
3001 text_addr
= data_addr
= bss_addr
= 0;
3005 if (strncmp (ptr
, "Text=", 5) == 0)
3008 /* Don't use strtol, could lose on big values. */
3009 while (*ptr
&& *ptr
!= ';')
3010 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3012 if (strncmp (ptr
, ";Data=", 6) == 0)
3015 while (*ptr
&& *ptr
!= ';')
3016 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3021 if (!lose
&& strncmp (ptr
, ";Bss=", 5) == 0)
3024 while (*ptr
&& *ptr
!= ';')
3025 bss_addr
= (bss_addr
<< 4) + fromhex (*ptr
++);
3027 if (bss_addr
!= data_addr
)
3028 warning (_("Target reported unsupported offsets: %s"), buf
);
3033 else if (strncmp (ptr
, "TextSeg=", 8) == 0)
3036 /* Don't use strtol, could lose on big values. */
3037 while (*ptr
&& *ptr
!= ';')
3038 text_addr
= (text_addr
<< 4) + fromhex (*ptr
++);
3041 if (strncmp (ptr
, ";DataSeg=", 9) == 0)
3044 while (*ptr
&& *ptr
!= ';')
3045 data_addr
= (data_addr
<< 4) + fromhex (*ptr
++);
3053 error (_("Malformed response to offset query, %s"), buf
);
3054 else if (*ptr
!= '\0')
3055 warning (_("Target reported unsupported offsets: %s"), buf
);
3057 offs
= ((struct section_offsets
*)
3058 alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
)));
3059 memcpy (offs
, symfile_objfile
->section_offsets
,
3060 SIZEOF_N_SECTION_OFFSETS (symfile_objfile
->num_sections
));
3062 data
= get_symfile_segment_data (symfile_objfile
->obfd
);
3063 do_segments
= (data
!= NULL
);
3064 do_sections
= num_segments
== 0;
3066 if (num_segments
> 0)
3068 segments
[0] = text_addr
;
3069 segments
[1] = data_addr
;
3071 /* If we have two segments, we can still try to relocate everything
3072 by assuming that the .text and .data offsets apply to the whole
3073 text and data segments. Convert the offsets given in the packet
3074 to base addresses for symfile_map_offsets_to_segments. */
3075 else if (data
&& data
->num_segments
== 2)
3077 segments
[0] = data
->segment_bases
[0] + text_addr
;
3078 segments
[1] = data
->segment_bases
[1] + data_addr
;
3081 /* If the object file has only one segment, assume that it is text
3082 rather than data; main programs with no writable data are rare,
3083 but programs with no code are useless. Of course the code might
3084 have ended up in the data segment... to detect that we would need
3085 the permissions here. */
3086 else if (data
&& data
->num_segments
== 1)
3088 segments
[0] = data
->segment_bases
[0] + text_addr
;
3091 /* There's no way to relocate by segment. */
3097 int ret
= symfile_map_offsets_to_segments (symfile_objfile
->obfd
, data
,
3098 offs
, num_segments
, segments
);
3100 if (ret
== 0 && !do_sections
)
3101 error (_("Can not handle qOffsets TextSeg "
3102 "response with this symbol file"));
3109 free_symfile_segment_data (data
);
3113 offs
->offsets
[SECT_OFF_TEXT (symfile_objfile
)] = text_addr
;
3115 /* This is a temporary kludge to force data and bss to use the
3116 same offsets because that's what nlmconv does now. The real
3117 solution requires changes to the stub and remote.c that I
3118 don't have time to do right now. */
3120 offs
->offsets
[SECT_OFF_DATA (symfile_objfile
)] = data_addr
;
3121 offs
->offsets
[SECT_OFF_BSS (symfile_objfile
)] = data_addr
;
3124 objfile_relocate (symfile_objfile
, offs
);
3127 /* Callback for iterate_over_threads. Set the STOP_REQUESTED flags in
3128 threads we know are stopped already. This is used during the
3129 initial remote connection in non-stop mode --- threads that are
3130 reported as already being stopped are left stopped. */
3133 set_stop_requested_callback (struct thread_info
*thread
, void *data
)
3135 /* If we have a stop reply for this thread, it must be stopped. */
3136 if (peek_stop_reply (thread
->ptid
))
3137 set_stop_requested (thread
->ptid
, 1);
3142 /* Send interrupt_sequence to remote target. */
3144 send_interrupt_sequence (void)
3146 if (interrupt_sequence_mode
== interrupt_sequence_control_c
)
3147 serial_write (remote_desc
, "\x03", 1);
3148 else if (interrupt_sequence_mode
== interrupt_sequence_break
)
3149 serial_send_break (remote_desc
);
3150 else if (interrupt_sequence_mode
== interrupt_sequence_break_g
)
3152 serial_send_break (remote_desc
);
3153 serial_write (remote_desc
, "g", 1);
3156 internal_error (__FILE__
, __LINE__
,
3157 _("Invalid value for interrupt_sequence_mode: %s."),
3158 interrupt_sequence_mode
);
3161 /* Query the remote target for which is the current thread/process,
3162 add it to our tables, and update INFERIOR_PTID. The caller is
3163 responsible for setting the state such that the remote end is ready
3164 to return the current thread. */
3167 add_current_inferior_and_thread (void)
3169 struct remote_state
*rs
= get_remote_state ();
3173 inferior_ptid
= null_ptid
;
3175 /* Now, if we have thread information, update inferior_ptid. */
3176 ptid
= remote_current_thread (inferior_ptid
);
3177 if (!ptid_equal (ptid
, null_ptid
))
3179 if (!remote_multi_process_p (rs
))
3182 inferior_ptid
= ptid
;
3186 /* Without this, some commands which require an active target
3187 (such as kill) won't work. This variable serves (at least)
3188 double duty as both the pid of the target process (if it has
3189 such), and as a flag indicating that a target is active. */
3190 inferior_ptid
= magic_null_ptid
;
3194 remote_add_inferior (fake_pid_p
, ptid_get_pid (inferior_ptid
), -1);
3196 /* Add the main thread. */
3197 add_thread_silent (inferior_ptid
);
3201 remote_start_remote (int from_tty
, struct target_ops
*target
, int extended_p
)
3203 struct remote_state
*rs
= get_remote_state ();
3204 struct packet_config
*noack_config
;
3205 char *wait_status
= NULL
;
3207 immediate_quit
++; /* Allow user to interrupt it. */
3209 if (interrupt_on_connect
)
3210 send_interrupt_sequence ();
3212 /* Ack any packet which the remote side has already sent. */
3213 serial_write (remote_desc
, "+", 1);
3215 /* The first packet we send to the target is the optional "supported
3216 packets" request. If the target can answer this, it will tell us
3217 which later probes to skip. */
3218 remote_query_supported ();
3220 /* If the stub wants to get a QAllow, compose one and send it. */
3221 if (remote_protocol_packets
[PACKET_QAllow
].support
!= PACKET_DISABLE
)
3222 remote_set_permissions ();
3224 /* Next, we possibly activate noack mode.
3226 If the QStartNoAckMode packet configuration is set to AUTO,
3227 enable noack mode if the stub reported a wish for it with
3230 If set to TRUE, then enable noack mode even if the stub didn't
3231 report it in qSupported. If the stub doesn't reply OK, the
3232 session ends with an error.
3234 If FALSE, then don't activate noack mode, regardless of what the
3235 stub claimed should be the default with qSupported. */
3237 noack_config
= &remote_protocol_packets
[PACKET_QStartNoAckMode
];
3239 if (noack_config
->detect
== AUTO_BOOLEAN_TRUE
3240 || (noack_config
->detect
== AUTO_BOOLEAN_AUTO
3241 && noack_config
->support
== PACKET_ENABLE
))
3243 putpkt ("QStartNoAckMode");
3244 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3245 if (packet_ok (rs
->buf
, noack_config
) == PACKET_OK
)
3251 /* Tell the remote that we are using the extended protocol. */
3253 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3256 /* Next, if the target can specify a description, read it. We do
3257 this before anything involving memory or registers. */
3258 target_find_description ();
3260 /* Next, now that we know something about the target, update the
3261 address spaces in the program spaces. */
3262 update_address_spaces ();
3264 /* On OSs where the list of libraries is global to all
3265 processes, we fetch them early. */
3266 if (gdbarch_has_global_solist (target_gdbarch
))
3267 solib_add (NULL
, from_tty
, target
, auto_solib_add
);
3271 if (!rs
->non_stop_aware
)
3272 error (_("Non-stop mode requested, but remote "
3273 "does not support non-stop"));
3275 putpkt ("QNonStop:1");
3276 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3278 if (strcmp (rs
->buf
, "OK") != 0)
3279 error (_("Remote refused setting non-stop mode with: %s"), rs
->buf
);
3281 /* Find about threads and processes the stub is already
3282 controlling. We default to adding them in the running state.
3283 The '?' query below will then tell us about which threads are
3285 remote_threads_info (target
);
3287 else if (rs
->non_stop_aware
)
3289 /* Don't assume that the stub can operate in all-stop mode.
3290 Request it explicitely. */
3291 putpkt ("QNonStop:0");
3292 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3294 if (strcmp (rs
->buf
, "OK") != 0)
3295 error (_("Remote refused setting all-stop mode with: %s"), rs
->buf
);
3298 /* Check whether the target is running now. */
3300 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3306 struct inferior
*inf
;
3308 if (rs
->buf
[0] == 'W' || rs
->buf
[0] == 'X')
3311 error (_("The target is not running (try extended-remote?)"));
3313 /* We're connected, but not running. Drop out before we
3314 call start_remote. */
3319 /* Save the reply for later. */
3320 wait_status
= alloca (strlen (rs
->buf
) + 1);
3321 strcpy (wait_status
, rs
->buf
);
3324 /* Let the stub know that we want it to return the thread. */
3325 set_continue_thread (minus_one_ptid
);
3327 add_current_inferior_and_thread ();
3329 /* init_wait_for_inferior should be called before get_offsets in order
3330 to manage `inserted' flag in bp loc in a correct state.
3331 breakpoint_init_inferior, called from init_wait_for_inferior, set
3332 `inserted' flag to 0, while before breakpoint_re_set, called from
3333 start_remote, set `inserted' flag to 1. In the initialization of
3334 inferior, breakpoint_init_inferior should be called first, and then
3335 breakpoint_re_set can be called. If this order is broken, state of
3336 `inserted' flag is wrong, and cause some problems on breakpoint
3338 init_wait_for_inferior ();
3340 get_offsets (); /* Get text, data & bss offsets. */
3342 /* If we could not find a description using qXfer, and we know
3343 how to do it some other way, try again. This is not
3344 supported for non-stop; it could be, but it is tricky if
3345 there are no stopped threads when we connect. */
3346 if (remote_read_description_p (target
)
3347 && gdbarch_target_desc (target_gdbarch
) == NULL
)
3349 target_clear_description ();
3350 target_find_description ();
3353 /* Use the previously fetched status. */
3354 gdb_assert (wait_status
!= NULL
);
3355 strcpy (rs
->buf
, wait_status
);
3356 rs
->cached_wait_status
= 1;
3359 start_remote (from_tty
); /* Initialize gdb process mechanisms. */
3363 /* Clear WFI global state. Do this before finding about new
3364 threads and inferiors, and setting the current inferior.
3365 Otherwise we would clear the proceed status of the current
3366 inferior when we want its stop_soon state to be preserved
3367 (see notice_new_inferior). */
3368 init_wait_for_inferior ();
3370 /* In non-stop, we will either get an "OK", meaning that there
3371 are no stopped threads at this time; or, a regular stop
3372 reply. In the latter case, there may be more than one thread
3373 stopped --- we pull them all out using the vStopped
3375 if (strcmp (rs
->buf
, "OK") != 0)
3377 struct stop_reply
*stop_reply
;
3378 struct cleanup
*old_chain
;
3380 stop_reply
= stop_reply_xmalloc ();
3381 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
3383 remote_parse_stop_reply (rs
->buf
, stop_reply
);
3384 discard_cleanups (old_chain
);
3386 /* get_pending_stop_replies acks this one, and gets the rest
3388 pending_stop_reply
= stop_reply
;
3389 remote_get_pending_stop_replies ();
3391 /* Make sure that threads that were stopped remain
3393 iterate_over_threads (set_stop_requested_callback
, NULL
);
3396 if (target_can_async_p ())
3397 target_async (inferior_event_handler
, 0);
3399 if (thread_count () == 0)
3402 error (_("The target is not running (try extended-remote?)"));
3404 /* We're connected, but not running. Drop out before we
3405 call start_remote. */
3409 /* Let the stub know that we want it to return the thread. */
3411 /* Force the stub to choose a thread. */
3412 set_general_thread (null_ptid
);
3415 inferior_ptid
= remote_current_thread (minus_one_ptid
);
3416 if (ptid_equal (inferior_ptid
, minus_one_ptid
))
3417 error (_("remote didn't report the current thread in non-stop mode"));
3419 get_offsets (); /* Get text, data & bss offsets. */
3421 /* In non-stop mode, any cached wait status will be stored in
3422 the stop reply queue. */
3423 gdb_assert (wait_status
== NULL
);
3425 /* Report all signals during attach/startup. */
3426 remote_pass_signals (0, NULL
);
3429 /* If we connected to a live target, do some additional setup. */
3430 if (target_has_execution
)
3432 if (exec_bfd
) /* No use without an exec file. */
3433 remote_check_symbols (symfile_objfile
);
3436 /* Possibly the target has been engaged in a trace run started
3437 previously; find out where things are at. */
3438 if (remote_get_trace_status (current_trace_status ()) != -1)
3440 struct uploaded_tp
*uploaded_tps
= NULL
;
3441 struct uploaded_tsv
*uploaded_tsvs
= NULL
;
3443 if (current_trace_status ()->running
)
3444 printf_filtered (_("Trace is already running on the target.\n"));
3446 /* Get trace state variables first, they may be checked when
3447 parsing uploaded commands. */
3449 remote_upload_trace_state_variables (&uploaded_tsvs
);
3451 merge_uploaded_trace_state_variables (&uploaded_tsvs
);
3453 remote_upload_tracepoints (&uploaded_tps
);
3455 merge_uploaded_tracepoints (&uploaded_tps
);
3458 /* If breakpoints are global, insert them now. */
3459 if (gdbarch_has_global_breakpoints (target_gdbarch
)
3460 && breakpoints_always_inserted_mode ())
3461 insert_breakpoints ();
3464 /* Open a connection to a remote debugger.
3465 NAME is the filename used for communication. */
3468 remote_open (char *name
, int from_tty
)
3470 remote_open_1 (name
, from_tty
, &remote_ops
, 0);
3473 /* Open a connection to a remote debugger using the extended
3474 remote gdb protocol. NAME is the filename used for communication. */
3477 extended_remote_open (char *name
, int from_tty
)
3479 remote_open_1 (name
, from_tty
, &extended_remote_ops
, 1 /*extended_p */);
3482 /* Generic code for opening a connection to a remote target. */
3485 init_all_packet_configs (void)
3489 for (i
= 0; i
< PACKET_MAX
; i
++)
3490 update_packet_config (&remote_protocol_packets
[i
]);
3493 /* Symbol look-up. */
3496 remote_check_symbols (struct objfile
*objfile
)
3498 struct remote_state
*rs
= get_remote_state ();
3499 char *msg
, *reply
, *tmp
;
3500 struct minimal_symbol
*sym
;
3503 /* The remote side has no concept of inferiors that aren't running
3504 yet, it only knows about running processes. If we're connected
3505 but our current inferior is not running, we should not invite the
3506 remote target to request symbol lookups related to its
3507 (unrelated) current process. */
3508 if (!target_has_execution
)
3511 if (remote_protocol_packets
[PACKET_qSymbol
].support
== PACKET_DISABLE
)
3514 /* Make sure the remote is pointing at the right process. Note
3515 there's no way to select "no process". */
3516 set_general_process ();
3518 /* Allocate a message buffer. We can't reuse the input buffer in RS,
3519 because we need both at the same time. */
3520 msg
= alloca (get_remote_packet_size ());
3522 /* Invite target to request symbol lookups. */
3524 putpkt ("qSymbol::");
3525 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3526 packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSymbol
]);
3529 while (strncmp (reply
, "qSymbol:", 8) == 0)
3532 end
= hex2bin (tmp
, (gdb_byte
*) msg
, strlen (tmp
) / 2);
3534 sym
= lookup_minimal_symbol (msg
, NULL
, NULL
);
3536 xsnprintf (msg
, get_remote_packet_size (), "qSymbol::%s", &reply
[8]);
3539 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
3540 CORE_ADDR sym_addr
= SYMBOL_VALUE_ADDRESS (sym
);
3542 /* If this is a function address, return the start of code
3543 instead of any data function descriptor. */
3544 sym_addr
= gdbarch_convert_from_func_ptr_addr (target_gdbarch
,
3548 xsnprintf (msg
, get_remote_packet_size (), "qSymbol:%s:%s",
3549 phex_nz (sym_addr
, addr_size
), &reply
[8]);
3553 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3558 static struct serial
*
3559 remote_serial_open (char *name
)
3561 static int udp_warning
= 0;
3563 /* FIXME: Parsing NAME here is a hack. But we want to warn here instead
3564 of in ser-tcp.c, because it is the remote protocol assuming that the
3565 serial connection is reliable and not the serial connection promising
3567 if (!udp_warning
&& strncmp (name
, "udp:", 4) == 0)
3569 warning (_("The remote protocol may be unreliable over UDP.\n"
3570 "Some events may be lost, rendering further debugging "
3575 return serial_open (name
);
3578 /* Inform the target of our permission settings. The permission flags
3579 work without this, but if the target knows the settings, it can do
3580 a couple things. First, it can add its own check, to catch cases
3581 that somehow manage to get by the permissions checks in target
3582 methods. Second, if the target is wired to disallow particular
3583 settings (for instance, a system in the field that is not set up to
3584 be able to stop at a breakpoint), it can object to any unavailable
3588 remote_set_permissions (void)
3590 struct remote_state
*rs
= get_remote_state ();
3592 sprintf (rs
->buf
, "QAllow:"
3593 "WriteReg:%x;WriteMem:%x;"
3594 "InsertBreak:%x;InsertTrace:%x;"
3595 "InsertFastTrace:%x;Stop:%x",
3596 may_write_registers
, may_write_memory
,
3597 may_insert_breakpoints
, may_insert_tracepoints
,
3598 may_insert_fast_tracepoints
, may_stop
);
3600 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3602 /* If the target didn't like the packet, warn the user. Do not try
3603 to undo the user's settings, that would just be maddening. */
3604 if (strcmp (rs
->buf
, "OK") != 0)
3605 warning (_("Remote refused setting permissions with: %s"), rs
->buf
);
3608 /* This type describes each known response to the qSupported
3610 struct protocol_feature
3612 /* The name of this protocol feature. */
3615 /* The default for this protocol feature. */
3616 enum packet_support default_support
;
3618 /* The function to call when this feature is reported, or after
3619 qSupported processing if the feature is not supported.
3620 The first argument points to this structure. The second
3621 argument indicates whether the packet requested support be
3622 enabled, disabled, or probed (or the default, if this function
3623 is being called at the end of processing and this feature was
3624 not reported). The third argument may be NULL; if not NULL, it
3625 is a NUL-terminated string taken from the packet following
3626 this feature's name and an equals sign. */
3627 void (*func
) (const struct protocol_feature
*, enum packet_support
,
3630 /* The corresponding packet for this feature. Only used if
3631 FUNC is remote_supported_packet. */
3636 remote_supported_packet (const struct protocol_feature
*feature
,
3637 enum packet_support support
,
3638 const char *argument
)
3642 warning (_("Remote qSupported response supplied an unexpected value for"
3643 " \"%s\"."), feature
->name
);
3647 if (remote_protocol_packets
[feature
->packet
].support
3648 == PACKET_SUPPORT_UNKNOWN
)
3649 remote_protocol_packets
[feature
->packet
].support
= support
;
3653 remote_packet_size (const struct protocol_feature
*feature
,
3654 enum packet_support support
, const char *value
)
3656 struct remote_state
*rs
= get_remote_state ();
3661 if (support
!= PACKET_ENABLE
)
3664 if (value
== NULL
|| *value
== '\0')
3666 warning (_("Remote target reported \"%s\" without a size."),
3672 packet_size
= strtol (value
, &value_end
, 16);
3673 if (errno
!= 0 || *value_end
!= '\0' || packet_size
< 0)
3675 warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."),
3676 feature
->name
, value
);
3680 if (packet_size
> MAX_REMOTE_PACKET_SIZE
)
3682 warning (_("limiting remote suggested packet size (%d bytes) to %d"),
3683 packet_size
, MAX_REMOTE_PACKET_SIZE
);
3684 packet_size
= MAX_REMOTE_PACKET_SIZE
;
3687 /* Record the new maximum packet size. */
3688 rs
->explicit_packet_size
= packet_size
;
3692 remote_multi_process_feature (const struct protocol_feature
*feature
,
3693 enum packet_support support
, const char *value
)
3695 struct remote_state
*rs
= get_remote_state ();
3697 rs
->multi_process_aware
= (support
== PACKET_ENABLE
);
3701 remote_non_stop_feature (const struct protocol_feature
*feature
,
3702 enum packet_support support
, const char *value
)
3704 struct remote_state
*rs
= get_remote_state ();
3706 rs
->non_stop_aware
= (support
== PACKET_ENABLE
);
3710 remote_cond_tracepoint_feature (const struct protocol_feature
*feature
,
3711 enum packet_support support
,
3714 struct remote_state
*rs
= get_remote_state ();
3716 rs
->cond_tracepoints
= (support
== PACKET_ENABLE
);
3720 remote_fast_tracepoint_feature (const struct protocol_feature
*feature
,
3721 enum packet_support support
,
3724 struct remote_state
*rs
= get_remote_state ();
3726 rs
->fast_tracepoints
= (support
== PACKET_ENABLE
);
3730 remote_static_tracepoint_feature (const struct protocol_feature
*feature
,
3731 enum packet_support support
,
3734 struct remote_state
*rs
= get_remote_state ();
3736 rs
->static_tracepoints
= (support
== PACKET_ENABLE
);
3740 remote_install_in_trace_feature (const struct protocol_feature
*feature
,
3741 enum packet_support support
,
3744 struct remote_state
*rs
= get_remote_state ();
3746 rs
->install_in_trace
= (support
== PACKET_ENABLE
);
3750 remote_disconnected_tracing_feature (const struct protocol_feature
*feature
,
3751 enum packet_support support
,
3754 struct remote_state
*rs
= get_remote_state ();
3756 rs
->disconnected_tracing
= (support
== PACKET_ENABLE
);
3760 remote_enable_disable_tracepoint_feature (const struct protocol_feature
*feature
,
3761 enum packet_support support
,
3764 struct remote_state
*rs
= get_remote_state ();
3766 rs
->enable_disable_tracepoints
= (support
== PACKET_ENABLE
);
3770 remote_string_tracing_feature (const struct protocol_feature
*feature
,
3771 enum packet_support support
,
3774 struct remote_state
*rs
= get_remote_state ();
3776 rs
->string_tracing
= (support
== PACKET_ENABLE
);
3779 static struct protocol_feature remote_protocol_features
[] = {
3780 { "PacketSize", PACKET_DISABLE
, remote_packet_size
, -1 },
3781 { "qXfer:auxv:read", PACKET_DISABLE
, remote_supported_packet
,
3782 PACKET_qXfer_auxv
},
3783 { "qXfer:features:read", PACKET_DISABLE
, remote_supported_packet
,
3784 PACKET_qXfer_features
},
3785 { "qXfer:libraries:read", PACKET_DISABLE
, remote_supported_packet
,
3786 PACKET_qXfer_libraries
},
3787 { "qXfer:libraries-svr4:read", PACKET_DISABLE
, remote_supported_packet
,
3788 PACKET_qXfer_libraries_svr4
},
3789 { "qXfer:memory-map:read", PACKET_DISABLE
, remote_supported_packet
,
3790 PACKET_qXfer_memory_map
},
3791 { "qXfer:spu:read", PACKET_DISABLE
, remote_supported_packet
,
3792 PACKET_qXfer_spu_read
},
3793 { "qXfer:spu:write", PACKET_DISABLE
, remote_supported_packet
,
3794 PACKET_qXfer_spu_write
},
3795 { "qXfer:osdata:read", PACKET_DISABLE
, remote_supported_packet
,
3796 PACKET_qXfer_osdata
},
3797 { "qXfer:threads:read", PACKET_DISABLE
, remote_supported_packet
,
3798 PACKET_qXfer_threads
},
3799 { "qXfer:traceframe-info:read", PACKET_DISABLE
, remote_supported_packet
,
3800 PACKET_qXfer_traceframe_info
},
3801 { "QPassSignals", PACKET_DISABLE
, remote_supported_packet
,
3802 PACKET_QPassSignals
},
3803 { "QStartNoAckMode", PACKET_DISABLE
, remote_supported_packet
,
3804 PACKET_QStartNoAckMode
},
3805 { "multiprocess", PACKET_DISABLE
, remote_multi_process_feature
, -1 },
3806 { "QNonStop", PACKET_DISABLE
, remote_non_stop_feature
, -1 },
3807 { "qXfer:siginfo:read", PACKET_DISABLE
, remote_supported_packet
,
3808 PACKET_qXfer_siginfo_read
},
3809 { "qXfer:siginfo:write", PACKET_DISABLE
, remote_supported_packet
,
3810 PACKET_qXfer_siginfo_write
},
3811 { "ConditionalTracepoints", PACKET_DISABLE
, remote_cond_tracepoint_feature
,
3812 PACKET_ConditionalTracepoints
},
3813 { "FastTracepoints", PACKET_DISABLE
, remote_fast_tracepoint_feature
,
3814 PACKET_FastTracepoints
},
3815 { "StaticTracepoints", PACKET_DISABLE
, remote_static_tracepoint_feature
,
3816 PACKET_StaticTracepoints
},
3817 {"InstallInTrace", PACKET_DISABLE
, remote_install_in_trace_feature
,
3818 PACKET_InstallInTrace
},
3819 { "DisconnectedTracing", PACKET_DISABLE
, remote_disconnected_tracing_feature
,
3821 { "ReverseContinue", PACKET_DISABLE
, remote_supported_packet
,
3823 { "ReverseStep", PACKET_DISABLE
, remote_supported_packet
,
3825 { "TracepointSource", PACKET_DISABLE
, remote_supported_packet
,
3826 PACKET_TracepointSource
},
3827 { "QAllow", PACKET_DISABLE
, remote_supported_packet
,
3829 { "EnableDisableTracepoints", PACKET_DISABLE
,
3830 remote_enable_disable_tracepoint_feature
, -1 },
3831 { "qXfer:fdpic:read", PACKET_DISABLE
, remote_supported_packet
,
3832 PACKET_qXfer_fdpic
},
3833 { "QDisableRandomization", PACKET_DISABLE
, remote_supported_packet
,
3834 PACKET_QDisableRandomization
},
3835 { "tracenz", PACKET_DISABLE
,
3836 remote_string_tracing_feature
, -1 },
3839 static char *remote_support_xml
;
3841 /* Register string appended to "xmlRegisters=" in qSupported query. */
3844 register_remote_support_xml (const char *xml
)
3846 #if defined(HAVE_LIBEXPAT)
3847 if (remote_support_xml
== NULL
)
3848 remote_support_xml
= concat ("xmlRegisters=", xml
, (char *) NULL
);
3851 char *copy
= xstrdup (remote_support_xml
+ 13);
3852 char *p
= strtok (copy
, ",");
3856 if (strcmp (p
, xml
) == 0)
3863 while ((p
= strtok (NULL
, ",")) != NULL
);
3866 remote_support_xml
= reconcat (remote_support_xml
,
3867 remote_support_xml
, ",", xml
,
3874 remote_query_supported_append (char *msg
, const char *append
)
3877 return reconcat (msg
, msg
, ";", append
, (char *) NULL
);
3879 return xstrdup (append
);
3883 remote_query_supported (void)
3885 struct remote_state
*rs
= get_remote_state ();
3888 unsigned char seen
[ARRAY_SIZE (remote_protocol_features
)];
3890 /* The packet support flags are handled differently for this packet
3891 than for most others. We treat an error, a disabled packet, and
3892 an empty response identically: any features which must be reported
3893 to be used will be automatically disabled. An empty buffer
3894 accomplishes this, since that is also the representation for a list
3895 containing no features. */
3898 if (remote_protocol_packets
[PACKET_qSupported
].support
!= PACKET_DISABLE
)
3901 struct cleanup
*old_chain
= make_cleanup (free_current_contents
, &q
);
3903 q
= remote_query_supported_append (q
, "multiprocess+");
3905 if (remote_support_xml
)
3906 q
= remote_query_supported_append (q
, remote_support_xml
);
3908 q
= remote_query_supported_append (q
, "qRelocInsn+");
3910 q
= reconcat (q
, "qSupported:", q
, (char *) NULL
);
3913 do_cleanups (old_chain
);
3915 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
3917 /* If an error occured, warn, but do not return - just reset the
3918 buffer to empty and go on to disable features. */
3919 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_qSupported
])
3922 warning (_("Remote failure reply: %s"), rs
->buf
);
3927 memset (seen
, 0, sizeof (seen
));
3932 enum packet_support is_supported
;
3933 char *p
, *end
, *name_end
, *value
;
3935 /* First separate out this item from the rest of the packet. If
3936 there's another item after this, we overwrite the separator
3937 (terminated strings are much easier to work with). */
3939 end
= strchr (p
, ';');
3942 end
= p
+ strlen (p
);
3952 warning (_("empty item in \"qSupported\" response"));
3957 name_end
= strchr (p
, '=');
3960 /* This is a name=value entry. */
3961 is_supported
= PACKET_ENABLE
;
3962 value
= name_end
+ 1;
3971 is_supported
= PACKET_ENABLE
;
3975 is_supported
= PACKET_DISABLE
;
3979 is_supported
= PACKET_SUPPORT_UNKNOWN
;
3983 warning (_("unrecognized item \"%s\" "
3984 "in \"qSupported\" response"), p
);
3990 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
3991 if (strcmp (remote_protocol_features
[i
].name
, p
) == 0)
3993 const struct protocol_feature
*feature
;
3996 feature
= &remote_protocol_features
[i
];
3997 feature
->func (feature
, is_supported
, value
);
4002 /* If we increased the packet size, make sure to increase the global
4003 buffer size also. We delay this until after parsing the entire
4004 qSupported packet, because this is the same buffer we were
4006 if (rs
->buf_size
< rs
->explicit_packet_size
)
4008 rs
->buf_size
= rs
->explicit_packet_size
;
4009 rs
->buf
= xrealloc (rs
->buf
, rs
->buf_size
);
4012 /* Handle the defaults for unmentioned features. */
4013 for (i
= 0; i
< ARRAY_SIZE (remote_protocol_features
); i
++)
4016 const struct protocol_feature
*feature
;
4018 feature
= &remote_protocol_features
[i
];
4019 feature
->func (feature
, feature
->default_support
, NULL
);
4025 remote_open_1 (char *name
, int from_tty
,
4026 struct target_ops
*target
, int extended_p
)
4028 struct remote_state
*rs
= get_remote_state ();
4031 error (_("To open a remote debug connection, you need to specify what\n"
4032 "serial device is attached to the remote system\n"
4033 "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."));
4035 /* See FIXME above. */
4036 if (!target_async_permitted
)
4037 wait_forever_enabled_p
= 1;
4039 /* If we're connected to a running target, target_preopen will kill it.
4040 But if we're connected to a target system with no running process,
4041 then we will still be connected when it returns. Ask this question
4042 first, before target_preopen has a chance to kill anything. */
4043 if (remote_desc
!= NULL
&& !have_inferiors ())
4046 || query (_("Already connected to a remote target. Disconnect? ")))
4049 error (_("Still connected."));
4052 target_preopen (from_tty
);
4054 unpush_target (target
);
4056 /* This time without a query. If we were connected to an
4057 extended-remote target and target_preopen killed the running
4058 process, we may still be connected. If we are starting "target
4059 remote" now, the extended-remote target will not have been
4060 removed by unpush_target. */
4061 if (remote_desc
!= NULL
&& !have_inferiors ())
4064 /* Make sure we send the passed signals list the next time we resume. */
4065 xfree (last_pass_packet
);
4066 last_pass_packet
= NULL
;
4068 remote_fileio_reset ();
4069 reopen_exec_file ();
4072 remote_desc
= remote_serial_open (name
);
4074 perror_with_name (name
);
4076 if (baud_rate
!= -1)
4078 if (serial_setbaudrate (remote_desc
, baud_rate
))
4080 /* The requested speed could not be set. Error out to
4081 top level after closing remote_desc. Take care to
4082 set remote_desc to NULL to avoid closing remote_desc
4084 serial_close (remote_desc
);
4086 perror_with_name (name
);
4090 serial_raw (remote_desc
);
4092 /* If there is something sitting in the buffer we might take it as a
4093 response to a command, which would be bad. */
4094 serial_flush_input (remote_desc
);
4098 puts_filtered ("Remote debugging using ");
4099 puts_filtered (name
);
4100 puts_filtered ("\n");
4102 push_target (target
); /* Switch to using remote target now. */
4104 /* Register extra event sources in the event loop. */
4105 remote_async_inferior_event_token
4106 = create_async_event_handler (remote_async_inferior_event_handler
,
4108 remote_async_get_pending_events_token
4109 = create_async_event_handler (remote_async_get_pending_events_handler
,
4112 /* Reset the target state; these things will be queried either by
4113 remote_query_supported or as they are needed. */
4114 init_all_packet_configs ();
4115 rs
->cached_wait_status
= 0;
4116 rs
->explicit_packet_size
= 0;
4118 rs
->multi_process_aware
= 0;
4119 rs
->extended
= extended_p
;
4120 rs
->non_stop_aware
= 0;
4121 rs
->waiting_for_stop_reply
= 0;
4122 rs
->ctrlc_pending_p
= 0;
4124 general_thread
= not_sent_ptid
;
4125 continue_thread
= not_sent_ptid
;
4126 remote_traceframe_number
= -1;
4128 /* Probe for ability to use "ThreadInfo" query, as required. */
4129 use_threadinfo_query
= 1;
4130 use_threadextra_query
= 1;
4132 if (target_async_permitted
)
4134 /* With this target we start out by owning the terminal. */
4135 remote_async_terminal_ours_p
= 1;
4137 /* FIXME: cagney/1999-09-23: During the initial connection it is
4138 assumed that the target is already ready and able to respond to
4139 requests. Unfortunately remote_start_remote() eventually calls
4140 wait_for_inferior() with no timeout. wait_forever_enabled_p gets
4141 around this. Eventually a mechanism that allows
4142 wait_for_inferior() to expect/get timeouts will be
4144 wait_forever_enabled_p
= 0;
4147 /* First delete any symbols previously loaded from shared libraries. */
4148 no_shared_libraries (NULL
, 0);
4151 init_thread_list ();
4153 /* Start the remote connection. If error() or QUIT, discard this
4154 target (we'd otherwise be in an inconsistent state) and then
4155 propogate the error on up the exception chain. This ensures that
4156 the caller doesn't stumble along blindly assuming that the
4157 function succeeded. The CLI doesn't have this problem but other
4158 UI's, such as MI do.
4160 FIXME: cagney/2002-05-19: Instead of re-throwing the exception,
4161 this function should return an error indication letting the
4162 caller restore the previous state. Unfortunately the command
4163 ``target remote'' is directly wired to this function making that
4164 impossible. On a positive note, the CLI side of this problem has
4165 been fixed - the function set_cmd_context() makes it possible for
4166 all the ``target ....'' commands to share a common callback
4167 function. See cli-dump.c. */
4169 volatile struct gdb_exception ex
;
4171 TRY_CATCH (ex
, RETURN_MASK_ALL
)
4173 remote_start_remote (from_tty
, target
, extended_p
);
4177 /* Pop the partially set up target - unless something else did
4178 already before throwing the exception. */
4179 if (remote_desc
!= NULL
)
4181 if (target_async_permitted
)
4182 wait_forever_enabled_p
= 1;
4183 throw_exception (ex
);
4187 if (target_async_permitted
)
4188 wait_forever_enabled_p
= 1;
4191 /* This takes a program previously attached to and detaches it. After
4192 this is done, GDB can be used to debug some other program. We
4193 better not have left any breakpoints in the target program or it'll
4194 die when it hits one. */
4197 remote_detach_1 (char *args
, int from_tty
, int extended
)
4199 int pid
= ptid_get_pid (inferior_ptid
);
4200 struct remote_state
*rs
= get_remote_state ();
4203 error (_("Argument given to \"detach\" when remotely debugging."));
4205 if (!target_has_execution
)
4206 error (_("No process to detach from."));
4208 /* Tell the remote target to detach. */
4209 if (remote_multi_process_p (rs
))
4210 sprintf (rs
->buf
, "D;%x", pid
);
4212 strcpy (rs
->buf
, "D");
4215 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4217 if (rs
->buf
[0] == 'O' && rs
->buf
[1] == 'K')
4219 else if (rs
->buf
[0] == '\0')
4220 error (_("Remote doesn't know how to detach"));
4222 error (_("Can't detach process."));
4226 if (remote_multi_process_p (rs
))
4227 printf_filtered (_("Detached from remote %s.\n"),
4228 target_pid_to_str (pid_to_ptid (pid
)));
4232 puts_filtered (_("Detached from remote process.\n"));
4234 puts_filtered (_("Ending remote debugging.\n"));
4238 discard_pending_stop_replies (pid
);
4239 target_mourn_inferior ();
4243 remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4245 remote_detach_1 (args
, from_tty
, 0);
4249 extended_remote_detach (struct target_ops
*ops
, char *args
, int from_tty
)
4251 remote_detach_1 (args
, from_tty
, 1);
4254 /* Same as remote_detach, but don't send the "D" packet; just disconnect. */
4257 remote_disconnect (struct target_ops
*target
, char *args
, int from_tty
)
4260 error (_("Argument given to \"disconnect\" when remotely debugging."));
4262 /* Make sure we unpush even the extended remote targets; mourn
4263 won't do it. So call remote_mourn_1 directly instead of
4264 target_mourn_inferior. */
4265 remote_mourn_1 (target
);
4268 puts_filtered ("Ending remote debugging.\n");
4271 /* Attach to the process specified by ARGS. If FROM_TTY is non-zero,
4272 be chatty about it. */
4275 extended_remote_attach_1 (struct target_ops
*target
, char *args
, int from_tty
)
4277 struct remote_state
*rs
= get_remote_state ();
4279 char *wait_status
= NULL
;
4281 pid
= parse_pid_to_attach (args
);
4283 /* Remote PID can be freely equal to getpid, do not check it here the same
4284 way as in other targets. */
4286 if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4287 error (_("This target does not support attaching to a process"));
4289 sprintf (rs
->buf
, "vAttach;%x", pid
);
4291 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4293 if (packet_ok (rs
->buf
,
4294 &remote_protocol_packets
[PACKET_vAttach
]) == PACKET_OK
)
4297 printf_unfiltered (_("Attached to %s\n"),
4298 target_pid_to_str (pid_to_ptid (pid
)));
4302 /* Save the reply for later. */
4303 wait_status
= alloca (strlen (rs
->buf
) + 1);
4304 strcpy (wait_status
, rs
->buf
);
4306 else if (strcmp (rs
->buf
, "OK") != 0)
4307 error (_("Attaching to %s failed with: %s"),
4308 target_pid_to_str (pid_to_ptid (pid
)),
4311 else if (remote_protocol_packets
[PACKET_vAttach
].support
== PACKET_DISABLE
)
4312 error (_("This target does not support attaching to a process"));
4314 error (_("Attaching to %s failed"),
4315 target_pid_to_str (pid_to_ptid (pid
)));
4317 set_current_inferior (remote_add_inferior (0, pid
, 1));
4319 inferior_ptid
= pid_to_ptid (pid
);
4323 struct thread_info
*thread
;
4325 /* Get list of threads. */
4326 remote_threads_info (target
);
4328 thread
= first_thread_of_process (pid
);
4330 inferior_ptid
= thread
->ptid
;
4332 inferior_ptid
= pid_to_ptid (pid
);
4334 /* Invalidate our notion of the remote current thread. */
4335 record_currthread (minus_one_ptid
);
4339 /* Now, if we have thread information, update inferior_ptid. */
4340 inferior_ptid
= remote_current_thread (inferior_ptid
);
4342 /* Add the main thread to the thread list. */
4343 add_thread_silent (inferior_ptid
);
4346 /* Next, if the target can specify a description, read it. We do
4347 this before anything involving memory or registers. */
4348 target_find_description ();
4352 /* Use the previously fetched status. */
4353 gdb_assert (wait_status
!= NULL
);
4355 if (target_can_async_p ())
4357 struct stop_reply
*stop_reply
;
4358 struct cleanup
*old_chain
;
4360 stop_reply
= stop_reply_xmalloc ();
4361 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
4362 remote_parse_stop_reply (wait_status
, stop_reply
);
4363 discard_cleanups (old_chain
);
4364 push_stop_reply (stop_reply
);
4366 target_async (inferior_event_handler
, 0);
4370 gdb_assert (wait_status
!= NULL
);
4371 strcpy (rs
->buf
, wait_status
);
4372 rs
->cached_wait_status
= 1;
4376 gdb_assert (wait_status
== NULL
);
4380 extended_remote_attach (struct target_ops
*ops
, char *args
, int from_tty
)
4382 extended_remote_attach_1 (ops
, args
, from_tty
);
4385 /* Convert hex digit A to a number. */
4390 if (a
>= '0' && a
<= '9')
4392 else if (a
>= 'a' && a
<= 'f')
4393 return a
- 'a' + 10;
4394 else if (a
>= 'A' && a
<= 'F')
4395 return a
- 'A' + 10;
4397 error (_("Reply contains invalid hex digit %d"), a
);
4401 hex2bin (const char *hex
, gdb_byte
*bin
, int count
)
4405 for (i
= 0; i
< count
; i
++)
4407 if (hex
[0] == 0 || hex
[1] == 0)
4409 /* Hex string is short, or of uneven length.
4410 Return the count that has been converted so far. */
4413 *bin
++ = fromhex (hex
[0]) * 16 + fromhex (hex
[1]);
4419 /* Convert number NIB to a hex digit. */
4427 return 'a' + nib
- 10;
4431 bin2hex (const gdb_byte
*bin
, char *hex
, int count
)
4435 /* May use a length, or a nul-terminated string as input. */
4437 count
= strlen ((char *) bin
);
4439 for (i
= 0; i
< count
; i
++)
4441 *hex
++ = tohex ((*bin
>> 4) & 0xf);
4442 *hex
++ = tohex (*bin
++ & 0xf);
4448 /* Check for the availability of vCont. This function should also check
4452 remote_vcont_probe (struct remote_state
*rs
)
4456 strcpy (rs
->buf
, "vCont?");
4458 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4461 /* Make sure that the features we assume are supported. */
4462 if (strncmp (buf
, "vCont", 5) == 0)
4465 int support_s
, support_S
, support_c
, support_C
;
4471 rs
->support_vCont_t
= 0;
4472 while (p
&& *p
== ';')
4475 if (*p
== 's' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4477 else if (*p
== 'S' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4479 else if (*p
== 'c' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4481 else if (*p
== 'C' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4483 else if (*p
== 't' && (*(p
+ 1) == ';' || *(p
+ 1) == 0))
4484 rs
->support_vCont_t
= 1;
4486 p
= strchr (p
, ';');
4489 /* If s, S, c, and C are not all supported, we can't use vCont. Clearing
4490 BUF will make packet_ok disable the packet. */
4491 if (!support_s
|| !support_S
|| !support_c
|| !support_C
)
4495 packet_ok (buf
, &remote_protocol_packets
[PACKET_vCont
]);
4498 /* Helper function for building "vCont" resumptions. Write a
4499 resumption to P. ENDP points to one-passed-the-end of the buffer
4500 we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The
4501 thread to be resumed is PTID; STEP and SIGGNAL indicate whether the
4502 resumed thread should be single-stepped and/or signalled. If PTID
4503 equals minus_one_ptid, then all threads are resumed; if PTID
4504 represents a process, then all threads of the process are resumed;
4505 the thread to be stepped and/or signalled is given in the global
4509 append_resumption (char *p
, char *endp
,
4510 ptid_t ptid
, int step
, enum target_signal siggnal
)
4512 struct remote_state
*rs
= get_remote_state ();
4514 if (step
&& siggnal
!= TARGET_SIGNAL_0
)
4515 p
+= xsnprintf (p
, endp
- p
, ";S%02x", siggnal
);
4517 p
+= xsnprintf (p
, endp
- p
, ";s");
4518 else if (siggnal
!= TARGET_SIGNAL_0
)
4519 p
+= xsnprintf (p
, endp
- p
, ";C%02x", siggnal
);
4521 p
+= xsnprintf (p
, endp
- p
, ";c");
4523 if (remote_multi_process_p (rs
) && ptid_is_pid (ptid
))
4527 /* All (-1) threads of process. */
4528 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4530 p
+= xsnprintf (p
, endp
- p
, ":");
4531 p
= write_ptid (p
, endp
, nptid
);
4533 else if (!ptid_equal (ptid
, minus_one_ptid
))
4535 p
+= xsnprintf (p
, endp
- p
, ":");
4536 p
= write_ptid (p
, endp
, ptid
);
4542 /* Resume the remote inferior by using a "vCont" packet. The thread
4543 to be resumed is PTID; STEP and SIGGNAL indicate whether the
4544 resumed thread should be single-stepped and/or signalled. If PTID
4545 equals minus_one_ptid, then all threads are resumed; the thread to
4546 be stepped and/or signalled is given in the global INFERIOR_PTID.
4547 This function returns non-zero iff it resumes the inferior.
4549 This function issues a strict subset of all possible vCont commands at the
4553 remote_vcont_resume (ptid_t ptid
, int step
, enum target_signal siggnal
)
4555 struct remote_state
*rs
= get_remote_state ();
4559 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4560 remote_vcont_probe (rs
);
4562 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_DISABLE
)
4566 endp
= rs
->buf
+ get_remote_packet_size ();
4568 /* If we could generate a wider range of packets, we'd have to worry
4569 about overflowing BUF. Should there be a generic
4570 "multi-part-packet" packet? */
4572 p
+= xsnprintf (p
, endp
- p
, "vCont");
4574 if (ptid_equal (ptid
, magic_null_ptid
))
4576 /* MAGIC_NULL_PTID means that we don't have any active threads,
4577 so we don't have any TID numbers the inferior will
4578 understand. Make sure to only send forms that do not specify
4580 append_resumption (p
, endp
, minus_one_ptid
, step
, siggnal
);
4582 else if (ptid_equal (ptid
, minus_one_ptid
) || ptid_is_pid (ptid
))
4584 /* Resume all threads (of all processes, or of a single
4585 process), with preference for INFERIOR_PTID. This assumes
4586 inferior_ptid belongs to the set of all threads we are about
4588 if (step
|| siggnal
!= TARGET_SIGNAL_0
)
4590 /* Step inferior_ptid, with or without signal. */
4591 p
= append_resumption (p
, endp
, inferior_ptid
, step
, siggnal
);
4594 /* And continue others without a signal. */
4595 append_resumption (p
, endp
, ptid
, /*step=*/ 0, TARGET_SIGNAL_0
);
4599 /* Scheduler locking; resume only PTID. */
4600 append_resumption (p
, endp
, ptid
, step
, siggnal
);
4603 gdb_assert (strlen (rs
->buf
) < get_remote_packet_size ());
4608 /* In non-stop, the stub replies to vCont with "OK". The stop
4609 reply will be reported asynchronously by means of a `%Stop'
4611 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4612 if (strcmp (rs
->buf
, "OK") != 0)
4613 error (_("Unexpected vCont reply in non-stop mode: %s"), rs
->buf
);
4619 /* Tell the remote machine to resume. */
4621 static enum target_signal last_sent_signal
= TARGET_SIGNAL_0
;
4623 static int last_sent_step
;
4626 remote_resume (struct target_ops
*ops
,
4627 ptid_t ptid
, int step
, enum target_signal siggnal
)
4629 struct remote_state
*rs
= get_remote_state ();
4632 last_sent_signal
= siggnal
;
4633 last_sent_step
= step
;
4635 /* The vCont packet doesn't need to specify threads via Hc. */
4636 /* No reverse support (yet) for vCont. */
4637 if (execution_direction
!= EXEC_REVERSE
)
4638 if (remote_vcont_resume (ptid
, step
, siggnal
))
4641 /* All other supported resume packets do use Hc, so set the continue
4643 if (ptid_equal (ptid
, minus_one_ptid
))
4644 set_continue_thread (any_thread_ptid
);
4646 set_continue_thread (ptid
);
4649 if (execution_direction
== EXEC_REVERSE
)
4651 /* We don't pass signals to the target in reverse exec mode. */
4652 if (info_verbose
&& siggnal
!= TARGET_SIGNAL_0
)
4653 warning (_(" - Can't pass signal %d to target in reverse: ignored."),
4657 && remote_protocol_packets
[PACKET_bs
].support
== PACKET_DISABLE
)
4658 error (_("Remote reverse-step not supported."));
4660 && remote_protocol_packets
[PACKET_bc
].support
== PACKET_DISABLE
)
4661 error (_("Remote reverse-continue not supported."));
4663 strcpy (buf
, step
? "bs" : "bc");
4665 else if (siggnal
!= TARGET_SIGNAL_0
)
4667 buf
[0] = step
? 'S' : 'C';
4668 buf
[1] = tohex (((int) siggnal
>> 4) & 0xf);
4669 buf
[2] = tohex (((int) siggnal
) & 0xf);
4673 strcpy (buf
, step
? "s" : "c");
4678 /* We are about to start executing the inferior, let's register it
4679 with the event loop. NOTE: this is the one place where all the
4680 execution commands end up. We could alternatively do this in each
4681 of the execution commands in infcmd.c. */
4682 /* FIXME: ezannoni 1999-09-28: We may need to move this out of here
4683 into infcmd.c in order to allow inferior function calls to work
4684 NOT asynchronously. */
4685 if (target_can_async_p ())
4686 target_async (inferior_event_handler
, 0);
4688 /* We've just told the target to resume. The remote server will
4689 wait for the inferior to stop, and then send a stop reply. In
4690 the mean time, we can't start another command/query ourselves
4691 because the stub wouldn't be ready to process it. This applies
4692 only to the base all-stop protocol, however. In non-stop (which
4693 only supports vCont), the stub replies with an "OK", and is
4694 immediate able to process further serial input. */
4696 rs
->waiting_for_stop_reply
= 1;
4700 /* Set up the signal handler for SIGINT, while the target is
4701 executing, ovewriting the 'regular' SIGINT signal handler. */
4703 initialize_sigint_signal_handler (void)
4705 signal (SIGINT
, handle_remote_sigint
);
4708 /* Signal handler for SIGINT, while the target is executing. */
4710 handle_remote_sigint (int sig
)
4712 signal (sig
, handle_remote_sigint_twice
);
4713 mark_async_signal_handler_wrapper (sigint_remote_token
);
4716 /* Signal handler for SIGINT, installed after SIGINT has already been
4717 sent once. It will take effect the second time that the user sends
4720 handle_remote_sigint_twice (int sig
)
4722 signal (sig
, handle_remote_sigint
);
4723 mark_async_signal_handler_wrapper (sigint_remote_twice_token
);
4726 /* Perform the real interruption of the target execution, in response
4729 async_remote_interrupt (gdb_client_data arg
)
4732 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt called\n");
4734 target_stop (inferior_ptid
);
4737 /* Perform interrupt, if the first attempt did not succeed. Just give
4738 up on the target alltogether. */
4740 async_remote_interrupt_twice (gdb_client_data arg
)
4743 fprintf_unfiltered (gdb_stdlog
, "remote_interrupt_twice called\n");
4748 /* Reinstall the usual SIGINT handlers, after the target has
4751 cleanup_sigint_signal_handler (void *dummy
)
4753 signal (SIGINT
, handle_sigint
);
4756 /* Send ^C to target to halt it. Target will respond, and send us a
4758 static void (*ofunc
) (int);
4760 /* The command line interface's stop routine. This function is installed
4761 as a signal handler for SIGINT. The first time a user requests a
4762 stop, we call remote_stop to send a break or ^C. If there is no
4763 response from the target (it didn't stop when the user requested it),
4764 we ask the user if he'd like to detach from the target. */
4766 remote_interrupt (int signo
)
4768 /* If this doesn't work, try more severe steps. */
4769 signal (signo
, remote_interrupt_twice
);
4771 gdb_call_async_signal_handler (sigint_remote_token
, 1);
4774 /* The user typed ^C twice. */
4777 remote_interrupt_twice (int signo
)
4779 signal (signo
, ofunc
);
4780 gdb_call_async_signal_handler (sigint_remote_twice_token
, 1);
4781 signal (signo
, remote_interrupt
);
4784 /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote
4785 thread, all threads of a remote process, or all threads of all
4789 remote_stop_ns (ptid_t ptid
)
4791 struct remote_state
*rs
= get_remote_state ();
4793 char *endp
= rs
->buf
+ get_remote_packet_size ();
4795 if (remote_protocol_packets
[PACKET_vCont
].support
== PACKET_SUPPORT_UNKNOWN
)
4796 remote_vcont_probe (rs
);
4798 if (!rs
->support_vCont_t
)
4799 error (_("Remote server does not support stopping threads"));
4801 if (ptid_equal (ptid
, minus_one_ptid
)
4802 || (!remote_multi_process_p (rs
) && ptid_is_pid (ptid
)))
4803 p
+= xsnprintf (p
, endp
- p
, "vCont;t");
4808 p
+= xsnprintf (p
, endp
- p
, "vCont;t:");
4810 if (ptid_is_pid (ptid
))
4811 /* All (-1) threads of process. */
4812 nptid
= ptid_build (ptid_get_pid (ptid
), 0, -1);
4815 /* Small optimization: if we already have a stop reply for
4816 this thread, no use in telling the stub we want this
4818 if (peek_stop_reply (ptid
))
4824 write_ptid (p
, endp
, nptid
);
4827 /* In non-stop, we get an immediate OK reply. The stop reply will
4828 come in asynchronously by notification. */
4830 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
4831 if (strcmp (rs
->buf
, "OK") != 0)
4832 error (_("Stopping %s failed: %s"), target_pid_to_str (ptid
), rs
->buf
);
4835 /* All-stop version of target_stop. Sends a break or a ^C to stop the
4836 remote target. It is undefined which thread of which process
4837 reports the stop. */
4840 remote_stop_as (ptid_t ptid
)
4842 struct remote_state
*rs
= get_remote_state ();
4844 rs
->ctrlc_pending_p
= 1;
4846 /* If the inferior is stopped already, but the core didn't know
4847 about it yet, just ignore the request. The cached wait status
4848 will be collected in remote_wait. */
4849 if (rs
->cached_wait_status
)
4852 /* Send interrupt_sequence to remote target. */
4853 send_interrupt_sequence ();
4856 /* This is the generic stop called via the target vector. When a target
4857 interrupt is requested, either by the command line or the GUI, we
4858 will eventually end up here. */
4861 remote_stop (ptid_t ptid
)
4864 fprintf_unfiltered (gdb_stdlog
, "remote_stop called\n");
4867 remote_stop_ns (ptid
);
4869 remote_stop_as (ptid
);
4872 /* Ask the user what to do when an interrupt is received. */
4875 interrupt_query (void)
4877 target_terminal_ours ();
4879 if (target_can_async_p ())
4881 signal (SIGINT
, handle_sigint
);
4882 deprecated_throw_reason (RETURN_QUIT
);
4886 if (query (_("Interrupted while waiting for the program.\n\
4887 Give up (and stop debugging it)? ")))
4890 deprecated_throw_reason (RETURN_QUIT
);
4894 target_terminal_inferior ();
4897 /* Enable/disable target terminal ownership. Most targets can use
4898 terminal groups to control terminal ownership. Remote targets are
4899 different in that explicit transfer of ownership to/from GDB/target
4903 remote_terminal_inferior (void)
4905 if (!target_async_permitted
)
4906 /* Nothing to do. */
4909 /* FIXME: cagney/1999-09-27: Make calls to target_terminal_*()
4910 idempotent. The event-loop GDB talking to an asynchronous target
4911 with a synchronous command calls this function from both
4912 event-top.c and infrun.c/infcmd.c. Once GDB stops trying to
4913 transfer the terminal to the target when it shouldn't this guard
4915 if (!remote_async_terminal_ours_p
)
4917 delete_file_handler (input_fd
);
4918 remote_async_terminal_ours_p
= 0;
4919 initialize_sigint_signal_handler ();
4920 /* NOTE: At this point we could also register our selves as the
4921 recipient of all input. Any characters typed could then be
4922 passed on down to the target. */
4926 remote_terminal_ours (void)
4928 if (!target_async_permitted
)
4929 /* Nothing to do. */
4932 /* See FIXME in remote_terminal_inferior. */
4933 if (remote_async_terminal_ours_p
)
4935 cleanup_sigint_signal_handler (NULL
);
4936 add_file_handler (input_fd
, stdin_event_handler
, 0);
4937 remote_async_terminal_ours_p
= 1;
4941 remote_console_output (char *msg
)
4945 for (p
= msg
; p
[0] && p
[1]; p
+= 2)
4948 char c
= fromhex (p
[0]) * 16 + fromhex (p
[1]);
4952 fputs_unfiltered (tb
, gdb_stdtarg
);
4954 gdb_flush (gdb_stdtarg
);
4957 typedef struct cached_reg
4960 gdb_byte data
[MAX_REGISTER_SIZE
];
4963 DEF_VEC_O(cached_reg_t
);
4967 struct stop_reply
*next
;
4971 struct target_waitstatus ws
;
4973 /* Expedited registers. This makes remote debugging a bit more
4974 efficient for those targets that provide critical registers as
4975 part of their normal status mechanism (as another roundtrip to
4976 fetch them is avoided). */
4977 VEC(cached_reg_t
) *regcache
;
4979 int stopped_by_watchpoint_p
;
4980 CORE_ADDR watch_data_address
;
4988 /* The list of already fetched and acknowledged stop events. */
4989 static struct stop_reply
*stop_reply_queue
;
4991 static struct stop_reply
*
4992 stop_reply_xmalloc (void)
4994 struct stop_reply
*r
= XMALLOC (struct stop_reply
);
5001 stop_reply_xfree (struct stop_reply
*r
)
5005 VEC_free (cached_reg_t
, r
->regcache
);
5010 /* Discard all pending stop replies of inferior PID. If PID is -1,
5011 discard everything. */
5014 discard_pending_stop_replies (int pid
)
5016 struct stop_reply
*prev
= NULL
, *reply
, *next
;
5018 /* Discard the in-flight notification. */
5019 if (pending_stop_reply
!= NULL
5021 || ptid_get_pid (pending_stop_reply
->ptid
) == pid
))
5023 stop_reply_xfree (pending_stop_reply
);
5024 pending_stop_reply
= NULL
;
5027 /* Discard the stop replies we have already pulled with
5029 for (reply
= stop_reply_queue
; reply
; reply
= next
)
5033 || ptid_get_pid (reply
->ptid
) == pid
)
5035 if (reply
== stop_reply_queue
)
5036 stop_reply_queue
= reply
->next
;
5038 prev
->next
= reply
->next
;
5040 stop_reply_xfree (reply
);
5047 /* Cleanup wrapper. */
5050 do_stop_reply_xfree (void *arg
)
5052 struct stop_reply
*r
= arg
;
5054 stop_reply_xfree (r
);
5057 /* Look for a queued stop reply belonging to PTID. If one is found,
5058 remove it from the queue, and return it. Returns NULL if none is
5059 found. If there are still queued events left to process, tell the
5060 event loop to get back to target_wait soon. */
5062 static struct stop_reply
*
5063 queued_stop_reply (ptid_t ptid
)
5065 struct stop_reply
*it
;
5066 struct stop_reply
**it_link
;
5068 it
= stop_reply_queue
;
5069 it_link
= &stop_reply_queue
;
5072 if (ptid_match (it
->ptid
, ptid
))
5074 *it_link
= it
->next
;
5079 it_link
= &it
->next
;
5083 if (stop_reply_queue
)
5084 /* There's still at least an event left. */
5085 mark_async_event_handler (remote_async_inferior_event_token
);
5090 /* Push a fully parsed stop reply in the stop reply queue. Since we
5091 know that we now have at least one queued event left to pass to the
5092 core side, tell the event loop to get back to target_wait soon. */
5095 push_stop_reply (struct stop_reply
*new_event
)
5097 struct stop_reply
*event
;
5099 if (stop_reply_queue
)
5101 for (event
= stop_reply_queue
;
5102 event
&& event
->next
;
5103 event
= event
->next
)
5106 event
->next
= new_event
;
5109 stop_reply_queue
= new_event
;
5111 mark_async_event_handler (remote_async_inferior_event_token
);
5114 /* Returns true if we have a stop reply for PTID. */
5117 peek_stop_reply (ptid_t ptid
)
5119 struct stop_reply
*it
;
5121 for (it
= stop_reply_queue
; it
; it
= it
->next
)
5122 if (ptid_equal (ptid
, it
->ptid
))
5124 if (it
->ws
.kind
== TARGET_WAITKIND_STOPPED
)
5131 /* Parse the stop reply in BUF. Either the function succeeds, and the
5132 result is stored in EVENT, or throws an error. */
5135 remote_parse_stop_reply (char *buf
, struct stop_reply
*event
)
5137 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5141 event
->ptid
= null_ptid
;
5142 event
->ws
.kind
= TARGET_WAITKIND_IGNORE
;
5143 event
->ws
.value
.integer
= 0;
5144 event
->solibs_changed
= 0;
5145 event
->replay_event
= 0;
5146 event
->stopped_by_watchpoint_p
= 0;
5147 event
->regcache
= NULL
;
5152 case 'T': /* Status with PC, SP, FP, ... */
5153 /* Expedited reply, containing Signal, {regno, reg} repeat. */
5154 /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where
5156 n... = register number
5157 r... = register contents
5160 p
= &buf
[3]; /* after Txx */
5168 /* If the packet contains a register number, save it in
5169 pnum and set p1 to point to the character following it.
5170 Otherwise p1 points to p. */
5172 /* If this packet is an awatch packet, don't parse the 'a'
5173 as a register number. */
5175 if (strncmp (p
, "awatch", strlen("awatch")) != 0
5176 && strncmp (p
, "core", strlen ("core") != 0))
5178 /* Read the ``P'' register number. */
5179 pnum
= strtol (p
, &p_temp
, 16);
5185 if (p1
== p
) /* No register number present here. */
5187 p1
= strchr (p
, ':');
5189 error (_("Malformed packet(a) (missing colon): %s\n\
5192 if (strncmp (p
, "thread", p1
- p
) == 0)
5193 event
->ptid
= read_ptid (++p1
, &p
);
5194 else if ((strncmp (p
, "watch", p1
- p
) == 0)
5195 || (strncmp (p
, "rwatch", p1
- p
) == 0)
5196 || (strncmp (p
, "awatch", p1
- p
) == 0))
5198 event
->stopped_by_watchpoint_p
= 1;
5199 p
= unpack_varlen_hex (++p1
, &addr
);
5200 event
->watch_data_address
= (CORE_ADDR
) addr
;
5202 else if (strncmp (p
, "library", p1
- p
) == 0)
5206 while (*p_temp
&& *p_temp
!= ';')
5209 event
->solibs_changed
= 1;
5212 else if (strncmp (p
, "replaylog", p1
- p
) == 0)
5214 /* NO_HISTORY event.
5215 p1 will indicate "begin" or "end", but
5216 it makes no difference for now, so ignore it. */
5217 event
->replay_event
= 1;
5218 p_temp
= strchr (p1
+ 1, ';');
5222 else if (strncmp (p
, "core", p1
- p
) == 0)
5226 p
= unpack_varlen_hex (++p1
, &c
);
5231 /* Silently skip unknown optional info. */
5232 p_temp
= strchr (p1
+ 1, ';');
5239 struct packet_reg
*reg
= packet_reg_from_pnum (rsa
, pnum
);
5240 cached_reg_t cached_reg
;
5245 error (_("Malformed packet(b) (missing colon): %s\n\
5251 error (_("Remote sent bad register number %s: %s\n\
5253 hex_string (pnum
), p
, buf
);
5255 cached_reg
.num
= reg
->regnum
;
5257 fieldsize
= hex2bin (p
, cached_reg
.data
,
5258 register_size (target_gdbarch
,
5261 if (fieldsize
< register_size (target_gdbarch
,
5263 warning (_("Remote reply is too short: %s"), buf
);
5265 VEC_safe_push (cached_reg_t
, event
->regcache
, &cached_reg
);
5269 error (_("Remote register badly formatted: %s\nhere: %s"),
5274 case 'S': /* Old style status, just signal only. */
5275 if (event
->solibs_changed
)
5276 event
->ws
.kind
= TARGET_WAITKIND_LOADED
;
5277 else if (event
->replay_event
)
5278 event
->ws
.kind
= TARGET_WAITKIND_NO_HISTORY
;
5281 event
->ws
.kind
= TARGET_WAITKIND_STOPPED
;
5282 event
->ws
.value
.sig
= (enum target_signal
)
5283 (((fromhex (buf
[1])) << 4) + (fromhex (buf
[2])));
5286 case 'W': /* Target exited. */
5293 /* GDB used to accept only 2 hex chars here. Stubs should
5294 only send more if they detect GDB supports multi-process
5296 p
= unpack_varlen_hex (&buf
[1], &value
);
5300 /* The remote process exited. */
5301 event
->ws
.kind
= TARGET_WAITKIND_EXITED
;
5302 event
->ws
.value
.integer
= value
;
5306 /* The remote process exited with a signal. */
5307 event
->ws
.kind
= TARGET_WAITKIND_SIGNALLED
;
5308 event
->ws
.value
.sig
= (enum target_signal
) value
;
5311 /* If no process is specified, assume inferior_ptid. */
5312 pid
= ptid_get_pid (inferior_ptid
);
5321 else if (strncmp (p
,
5322 "process:", sizeof ("process:") - 1) == 0)
5326 p
+= sizeof ("process:") - 1;
5327 unpack_varlen_hex (p
, &upid
);
5331 error (_("unknown stop reply packet: %s"), buf
);
5334 error (_("unknown stop reply packet: %s"), buf
);
5335 event
->ptid
= pid_to_ptid (pid
);
5340 if (non_stop
&& ptid_equal (event
->ptid
, null_ptid
))
5341 error (_("No process or thread specified in stop reply: %s"), buf
);
5344 /* When the stub wants to tell GDB about a new stop reply, it sends a
5345 stop notification (%Stop). Those can come it at any time, hence,
5346 we have to make sure that any pending putpkt/getpkt sequence we're
5347 making is finished, before querying the stub for more events with
5348 vStopped. E.g., if we started a vStopped sequence immediatelly
5349 upon receiving the %Stop notification, something like this could
5357 1.6) <-- (registers reply to step #1.3)
5359 Obviously, the reply in step #1.6 would be unexpected to a vStopped
5362 To solve this, whenever we parse a %Stop notification sucessfully,
5363 we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on
5364 doing whatever we were doing:
5370 <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN>
5371 2.5) <-- (registers reply to step #2.3)
5373 Eventualy after step #2.5, we return to the event loop, which
5374 notices there's an event on the
5375 REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the
5376 associated callback --- the function below. At this point, we're
5377 always safe to start a vStopped sequence. :
5380 2.7) <-- T05 thread:2
5386 remote_get_pending_stop_replies (void)
5388 struct remote_state
*rs
= get_remote_state ();
5390 if (pending_stop_reply
)
5393 putpkt ("vStopped");
5395 /* Now we can rely on it. */
5396 push_stop_reply (pending_stop_reply
);
5397 pending_stop_reply
= NULL
;
5401 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5402 if (strcmp (rs
->buf
, "OK") == 0)
5406 struct cleanup
*old_chain
;
5407 struct stop_reply
*stop_reply
= stop_reply_xmalloc ();
5409 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5410 remote_parse_stop_reply (rs
->buf
, stop_reply
);
5413 putpkt ("vStopped");
5415 if (stop_reply
->ws
.kind
!= TARGET_WAITKIND_IGNORE
)
5417 /* Now we can rely on it. */
5418 discard_cleanups (old_chain
);
5419 push_stop_reply (stop_reply
);
5422 /* We got an unknown stop reply. */
5423 do_cleanups (old_chain
);
5430 /* Called when it is decided that STOP_REPLY holds the info of the
5431 event that is to be returned to the core. This function always
5432 destroys STOP_REPLY. */
5435 process_stop_reply (struct stop_reply
*stop_reply
,
5436 struct target_waitstatus
*status
)
5440 *status
= stop_reply
->ws
;
5441 ptid
= stop_reply
->ptid
;
5443 /* If no thread/process was reported by the stub, assume the current
5445 if (ptid_equal (ptid
, null_ptid
))
5446 ptid
= inferior_ptid
;
5448 if (status
->kind
!= TARGET_WAITKIND_EXITED
5449 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5451 /* Expedited registers. */
5452 if (stop_reply
->regcache
)
5454 struct regcache
*regcache
5455 = get_thread_arch_regcache (ptid
, target_gdbarch
);
5460 VEC_iterate(cached_reg_t
, stop_reply
->regcache
, ix
, reg
);
5462 regcache_raw_supply (regcache
, reg
->num
, reg
->data
);
5463 VEC_free (cached_reg_t
, stop_reply
->regcache
);
5466 remote_stopped_by_watchpoint_p
= stop_reply
->stopped_by_watchpoint_p
;
5467 remote_watch_data_address
= stop_reply
->watch_data_address
;
5469 remote_notice_new_inferior (ptid
, 0);
5470 demand_private_info (ptid
)->core
= stop_reply
->core
;
5473 stop_reply_xfree (stop_reply
);
5477 /* The non-stop mode version of target_wait. */
5480 remote_wait_ns (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5482 struct remote_state
*rs
= get_remote_state ();
5483 struct stop_reply
*stop_reply
;
5486 /* If in non-stop mode, get out of getpkt even if a
5487 notification is received. */
5489 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5496 case 'E': /* Error of some sort. */
5497 /* We're out of sync with the target now. Did it continue
5498 or not? We can't tell which thread it was in non-stop,
5499 so just ignore this. */
5500 warning (_("Remote failure reply: %s"), rs
->buf
);
5502 case 'O': /* Console output. */
5503 remote_console_output (rs
->buf
+ 1);
5506 warning (_("Invalid remote reply: %s"), rs
->buf
);
5510 /* Acknowledge a pending stop reply that may have arrived in the
5512 if (pending_stop_reply
!= NULL
)
5513 remote_get_pending_stop_replies ();
5515 /* If indeed we noticed a stop reply, we're done. */
5516 stop_reply
= queued_stop_reply (ptid
);
5517 if (stop_reply
!= NULL
)
5518 return process_stop_reply (stop_reply
, status
);
5520 /* Still no event. If we're just polling for an event, then
5521 return to the event loop. */
5522 if (options
& TARGET_WNOHANG
)
5524 status
->kind
= TARGET_WAITKIND_IGNORE
;
5525 return minus_one_ptid
;
5528 /* Otherwise do a blocking wait. */
5529 ret
= getpkt_or_notif_sane (&rs
->buf
, &rs
->buf_size
,
5534 /* Wait until the remote machine stops, then return, storing status in
5535 STATUS just as `wait' would. */
5538 remote_wait_as (ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5540 struct remote_state
*rs
= get_remote_state ();
5541 ptid_t event_ptid
= null_ptid
;
5543 struct stop_reply
*stop_reply
;
5547 status
->kind
= TARGET_WAITKIND_IGNORE
;
5548 status
->value
.integer
= 0;
5550 stop_reply
= queued_stop_reply (ptid
);
5551 if (stop_reply
!= NULL
)
5552 return process_stop_reply (stop_reply
, status
);
5554 if (rs
->cached_wait_status
)
5555 /* Use the cached wait status, but only once. */
5556 rs
->cached_wait_status
= 0;
5561 if (!target_is_async_p ())
5563 ofunc
= signal (SIGINT
, remote_interrupt
);
5564 /* If the user hit C-c before this packet, or between packets,
5565 pretend that it was hit right here. */
5569 remote_interrupt (SIGINT
);
5573 /* FIXME: cagney/1999-09-27: If we're in async mode we should
5574 _never_ wait for ever -> test on target_is_async_p().
5575 However, before we do that we need to ensure that the caller
5576 knows how to take the target into/out of async mode. */
5577 ret
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, wait_forever_enabled_p
);
5578 if (!target_is_async_p ())
5579 signal (SIGINT
, ofunc
);
5584 remote_stopped_by_watchpoint_p
= 0;
5586 /* We got something. */
5587 rs
->waiting_for_stop_reply
= 0;
5589 /* Assume that the target has acknowledged Ctrl-C unless we receive
5590 an 'F' or 'O' packet. */
5591 if (buf
[0] != 'F' && buf
[0] != 'O')
5592 rs
->ctrlc_pending_p
= 0;
5596 case 'E': /* Error of some sort. */
5597 /* We're out of sync with the target now. Did it continue or
5598 not? Not is more likely, so report a stop. */
5599 warning (_("Remote failure reply: %s"), buf
);
5600 status
->kind
= TARGET_WAITKIND_STOPPED
;
5601 status
->value
.sig
= TARGET_SIGNAL_0
;
5603 case 'F': /* File-I/O request. */
5604 remote_fileio_request (buf
, rs
->ctrlc_pending_p
);
5605 rs
->ctrlc_pending_p
= 0;
5607 case 'T': case 'S': case 'X': case 'W':
5609 struct stop_reply
*stop_reply
;
5610 struct cleanup
*old_chain
;
5612 stop_reply
= stop_reply_xmalloc ();
5613 old_chain
= make_cleanup (do_stop_reply_xfree
, stop_reply
);
5614 remote_parse_stop_reply (buf
, stop_reply
);
5615 discard_cleanups (old_chain
);
5616 event_ptid
= process_stop_reply (stop_reply
, status
);
5619 case 'O': /* Console output. */
5620 remote_console_output (buf
+ 1);
5622 /* The target didn't really stop; keep waiting. */
5623 rs
->waiting_for_stop_reply
= 1;
5627 if (last_sent_signal
!= TARGET_SIGNAL_0
)
5629 /* Zero length reply means that we tried 'S' or 'C' and the
5630 remote system doesn't support it. */
5631 target_terminal_ours_for_output ();
5633 ("Can't send signals to this remote system. %s not sent.\n",
5634 target_signal_to_name (last_sent_signal
));
5635 last_sent_signal
= TARGET_SIGNAL_0
;
5636 target_terminal_inferior ();
5638 strcpy ((char *) buf
, last_sent_step
? "s" : "c");
5639 putpkt ((char *) buf
);
5641 /* We just told the target to resume, so a stop reply is in
5643 rs
->waiting_for_stop_reply
= 1;
5646 /* else fallthrough */
5648 warning (_("Invalid remote reply: %s"), buf
);
5650 rs
->waiting_for_stop_reply
= 1;
5654 if (status
->kind
== TARGET_WAITKIND_IGNORE
)
5656 /* Nothing interesting happened. If we're doing a non-blocking
5657 poll, we're done. Otherwise, go back to waiting. */
5658 if (options
& TARGET_WNOHANG
)
5659 return minus_one_ptid
;
5663 else if (status
->kind
!= TARGET_WAITKIND_EXITED
5664 && status
->kind
!= TARGET_WAITKIND_SIGNALLED
)
5666 if (!ptid_equal (event_ptid
, null_ptid
))
5667 record_currthread (event_ptid
);
5669 event_ptid
= inferior_ptid
;
5672 /* A process exit. Invalidate our notion of current thread. */
5673 record_currthread (minus_one_ptid
);
5678 /* Wait until the remote machine stops, then return, storing status in
5679 STATUS just as `wait' would. */
5682 remote_wait (struct target_ops
*ops
,
5683 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
5688 event_ptid
= remote_wait_ns (ptid
, status
, options
);
5690 event_ptid
= remote_wait_as (ptid
, status
, options
);
5692 if (target_can_async_p ())
5694 /* If there are are events left in the queue tell the event loop
5696 if (stop_reply_queue
)
5697 mark_async_event_handler (remote_async_inferior_event_token
);
5703 /* Fetch a single register using a 'p' packet. */
5706 fetch_register_using_p (struct regcache
*regcache
, struct packet_reg
*reg
)
5708 struct remote_state
*rs
= get_remote_state ();
5710 char regp
[MAX_REGISTER_SIZE
];
5713 if (remote_protocol_packets
[PACKET_p
].support
== PACKET_DISABLE
)
5716 if (reg
->pnum
== -1)
5721 p
+= hexnumstr (p
, reg
->pnum
);
5724 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5728 switch (packet_ok (buf
, &remote_protocol_packets
[PACKET_p
]))
5732 case PACKET_UNKNOWN
:
5735 error (_("Could not fetch register \"%s\"; remote failure reply '%s'"),
5736 gdbarch_register_name (get_regcache_arch (regcache
),
5741 /* If this register is unfetchable, tell the regcache. */
5744 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5748 /* Otherwise, parse and supply the value. */
5754 error (_("fetch_register_using_p: early buf termination"));
5756 regp
[i
++] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5759 regcache_raw_supply (regcache
, reg
->regnum
, regp
);
5763 /* Fetch the registers included in the target's 'g' packet. */
5766 send_g_packet (void)
5768 struct remote_state
*rs
= get_remote_state ();
5771 sprintf (rs
->buf
, "g");
5772 remote_send (&rs
->buf
, &rs
->buf_size
);
5774 /* We can get out of synch in various cases. If the first character
5775 in the buffer is not a hex character, assume that has happened
5776 and try to fetch another packet to read. */
5777 while ((rs
->buf
[0] < '0' || rs
->buf
[0] > '9')
5778 && (rs
->buf
[0] < 'A' || rs
->buf
[0] > 'F')
5779 && (rs
->buf
[0] < 'a' || rs
->buf
[0] > 'f')
5780 && rs
->buf
[0] != 'x') /* New: unavailable register value. */
5783 fprintf_unfiltered (gdb_stdlog
,
5784 "Bad register packet; fetching a new packet\n");
5785 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
5788 buf_len
= strlen (rs
->buf
);
5790 /* Sanity check the received packet. */
5791 if (buf_len
% 2 != 0)
5792 error (_("Remote 'g' packet reply is of odd length: %s"), rs
->buf
);
5798 process_g_packet (struct regcache
*regcache
)
5800 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5801 struct remote_state
*rs
= get_remote_state ();
5802 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5807 buf_len
= strlen (rs
->buf
);
5809 /* Further sanity checks, with knowledge of the architecture. */
5810 if (buf_len
> 2 * rsa
->sizeof_g_packet
)
5811 error (_("Remote 'g' packet reply is too long: %s"), rs
->buf
);
5813 /* Save the size of the packet sent to us by the target. It is used
5814 as a heuristic when determining the max size of packets that the
5815 target can safely receive. */
5816 if (rsa
->actual_register_packet_size
== 0)
5817 rsa
->actual_register_packet_size
= buf_len
;
5819 /* If this is smaller than we guessed the 'g' packet would be,
5820 update our records. A 'g' reply that doesn't include a register's
5821 value implies either that the register is not available, or that
5822 the 'p' packet must be used. */
5823 if (buf_len
< 2 * rsa
->sizeof_g_packet
)
5825 rsa
->sizeof_g_packet
= buf_len
/ 2;
5827 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5829 if (rsa
->regs
[i
].pnum
== -1)
5832 if (rsa
->regs
[i
].offset
>= rsa
->sizeof_g_packet
)
5833 rsa
->regs
[i
].in_g_packet
= 0;
5835 rsa
->regs
[i
].in_g_packet
= 1;
5839 regs
= alloca (rsa
->sizeof_g_packet
);
5841 /* Unimplemented registers read as all bits zero. */
5842 memset (regs
, 0, rsa
->sizeof_g_packet
);
5844 /* Reply describes registers byte by byte, each byte encoded as two
5845 hex characters. Suck them all up, then supply them to the
5846 register cacheing/storage mechanism. */
5849 for (i
= 0; i
< rsa
->sizeof_g_packet
; i
++)
5851 if (p
[0] == 0 || p
[1] == 0)
5852 /* This shouldn't happen - we adjusted sizeof_g_packet above. */
5853 internal_error (__FILE__
, __LINE__
,
5854 _("unexpected end of 'g' packet reply"));
5856 if (p
[0] == 'x' && p
[1] == 'x')
5857 regs
[i
] = 0; /* 'x' */
5859 regs
[i
] = fromhex (p
[0]) * 16 + fromhex (p
[1]);
5863 for (i
= 0; i
< gdbarch_num_regs (gdbarch
); i
++)
5865 struct packet_reg
*r
= &rsa
->regs
[i
];
5869 if (r
->offset
* 2 >= strlen (rs
->buf
))
5870 /* This shouldn't happen - we adjusted in_g_packet above. */
5871 internal_error (__FILE__
, __LINE__
,
5872 _("unexpected end of 'g' packet reply"));
5873 else if (rs
->buf
[r
->offset
* 2] == 'x')
5875 gdb_assert (r
->offset
* 2 < strlen (rs
->buf
));
5876 /* The register isn't available, mark it as such (at
5877 the same time setting the value to zero). */
5878 regcache_raw_supply (regcache
, r
->regnum
, NULL
);
5881 regcache_raw_supply (regcache
, r
->regnum
,
5888 fetch_registers_using_g (struct regcache
*regcache
)
5891 process_g_packet (regcache
);
5894 /* Make the remote selected traceframe match GDB's selected
5898 set_remote_traceframe (void)
5902 if (remote_traceframe_number
== get_traceframe_number ())
5905 /* Avoid recursion, remote_trace_find calls us again. */
5906 remote_traceframe_number
= get_traceframe_number ();
5908 newnum
= target_trace_find (tfind_number
,
5909 get_traceframe_number (), 0, 0, NULL
);
5911 /* Should not happen. If it does, all bets are off. */
5912 if (newnum
!= get_traceframe_number ())
5913 warning (_("could not set remote traceframe"));
5917 remote_fetch_registers (struct target_ops
*ops
,
5918 struct regcache
*regcache
, int regnum
)
5920 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5923 set_remote_traceframe ();
5924 set_general_thread (inferior_ptid
);
5928 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
5930 gdb_assert (reg
!= NULL
);
5932 /* If this register might be in the 'g' packet, try that first -
5933 we are likely to read more than one register. If this is the
5934 first 'g' packet, we might be overly optimistic about its
5935 contents, so fall back to 'p'. */
5936 if (reg
->in_g_packet
)
5938 fetch_registers_using_g (regcache
);
5939 if (reg
->in_g_packet
)
5943 if (fetch_register_using_p (regcache
, reg
))
5946 /* This register is not available. */
5947 regcache_raw_supply (regcache
, reg
->regnum
, NULL
);
5952 fetch_registers_using_g (regcache
);
5954 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5955 if (!rsa
->regs
[i
].in_g_packet
)
5956 if (!fetch_register_using_p (regcache
, &rsa
->regs
[i
]))
5958 /* This register is not available. */
5959 regcache_raw_supply (regcache
, i
, NULL
);
5963 /* Prepare to store registers. Since we may send them all (using a
5964 'G' request), we have to read out the ones we don't want to change
5968 remote_prepare_to_store (struct regcache
*regcache
)
5970 struct remote_arch_state
*rsa
= get_remote_arch_state ();
5972 gdb_byte buf
[MAX_REGISTER_SIZE
];
5974 /* Make sure the entire registers array is valid. */
5975 switch (remote_protocol_packets
[PACKET_P
].support
)
5977 case PACKET_DISABLE
:
5978 case PACKET_SUPPORT_UNKNOWN
:
5979 /* Make sure all the necessary registers are cached. */
5980 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
5981 if (rsa
->regs
[i
].in_g_packet
)
5982 regcache_raw_read (regcache
, rsa
->regs
[i
].regnum
, buf
);
5989 /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF
5990 packet was not recognized. */
5993 store_register_using_P (const struct regcache
*regcache
,
5994 struct packet_reg
*reg
)
5996 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
5997 struct remote_state
*rs
= get_remote_state ();
5998 /* Try storing a single register. */
5999 char *buf
= rs
->buf
;
6000 gdb_byte regp
[MAX_REGISTER_SIZE
];
6003 if (remote_protocol_packets
[PACKET_P
].support
== PACKET_DISABLE
)
6006 if (reg
->pnum
== -1)
6009 xsnprintf (buf
, get_remote_packet_size (), "P%s=", phex_nz (reg
->pnum
, 0));
6010 p
= buf
+ strlen (buf
);
6011 regcache_raw_collect (regcache
, reg
->regnum
, regp
);
6012 bin2hex (regp
, p
, register_size (gdbarch
, reg
->regnum
));
6014 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6016 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_P
]))
6021 error (_("Could not write register \"%s\"; remote failure reply '%s'"),
6022 gdbarch_register_name (gdbarch
, reg
->regnum
), rs
->buf
);
6023 case PACKET_UNKNOWN
:
6026 internal_error (__FILE__
, __LINE__
, _("Bad result from packet_ok"));
6030 /* Store register REGNUM, or all registers if REGNUM == -1, from the
6031 contents of the register cache buffer. FIXME: ignores errors. */
6034 store_registers_using_G (const struct regcache
*regcache
)
6036 struct remote_state
*rs
= get_remote_state ();
6037 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6041 /* Extract all the registers in the regcache copying them into a
6046 regs
= alloca (rsa
->sizeof_g_packet
);
6047 memset (regs
, 0, rsa
->sizeof_g_packet
);
6048 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6050 struct packet_reg
*r
= &rsa
->regs
[i
];
6053 regcache_raw_collect (regcache
, r
->regnum
, regs
+ r
->offset
);
6057 /* Command describes registers byte by byte,
6058 each byte encoded as two hex characters. */
6061 /* remote_prepare_to_store insures that rsa->sizeof_g_packet gets
6063 bin2hex (regs
, p
, rsa
->sizeof_g_packet
);
6065 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6066 if (packet_check_result (rs
->buf
) == PACKET_ERROR
)
6067 error (_("Could not write registers; remote failure reply '%s'"),
6071 /* Store register REGNUM, or all registers if REGNUM == -1, from the contents
6072 of the register cache buffer. FIXME: ignores errors. */
6075 remote_store_registers (struct target_ops
*ops
,
6076 struct regcache
*regcache
, int regnum
)
6078 struct remote_arch_state
*rsa
= get_remote_arch_state ();
6081 set_remote_traceframe ();
6082 set_general_thread (inferior_ptid
);
6086 struct packet_reg
*reg
= packet_reg_from_regnum (rsa
, regnum
);
6088 gdb_assert (reg
!= NULL
);
6090 /* Always prefer to store registers using the 'P' packet if
6091 possible; we often change only a small number of registers.
6092 Sometimes we change a larger number; we'd need help from a
6093 higher layer to know to use 'G'. */
6094 if (store_register_using_P (regcache
, reg
))
6097 /* For now, don't complain if we have no way to write the
6098 register. GDB loses track of unavailable registers too
6099 easily. Some day, this may be an error. We don't have
6100 any way to read the register, either... */
6101 if (!reg
->in_g_packet
)
6104 store_registers_using_G (regcache
);
6108 store_registers_using_G (regcache
);
6110 for (i
= 0; i
< gdbarch_num_regs (get_regcache_arch (regcache
)); i
++)
6111 if (!rsa
->regs
[i
].in_g_packet
)
6112 if (!store_register_using_P (regcache
, &rsa
->regs
[i
]))
6113 /* See above for why we do not issue an error here. */
6118 /* Return the number of hex digits in num. */
6121 hexnumlen (ULONGEST num
)
6125 for (i
= 0; num
!= 0; i
++)
6131 /* Set BUF to the minimum number of hex digits representing NUM. */
6134 hexnumstr (char *buf
, ULONGEST num
)
6136 int len
= hexnumlen (num
);
6138 return hexnumnstr (buf
, num
, len
);
6142 /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */
6145 hexnumnstr (char *buf
, ULONGEST num
, int width
)
6151 for (i
= width
- 1; i
>= 0; i
--)
6153 buf
[i
] = "0123456789abcdef"[(num
& 0xf)];
6160 /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */
6163 remote_address_masked (CORE_ADDR addr
)
6165 int address_size
= remote_address_size
;
6167 /* If "remoteaddresssize" was not set, default to target address size. */
6169 address_size
= gdbarch_addr_bit (target_gdbarch
);
6171 if (address_size
> 0
6172 && address_size
< (sizeof (ULONGEST
) * 8))
6174 /* Only create a mask when that mask can safely be constructed
6175 in a ULONGEST variable. */
6178 mask
= (mask
<< address_size
) - 1;
6184 /* Convert BUFFER, binary data at least LEN bytes long, into escaped
6185 binary data in OUT_BUF. Set *OUT_LEN to the length of the data
6186 encoded in OUT_BUF, and return the number of bytes in OUT_BUF
6187 (which may be more than *OUT_LEN due to escape characters). The
6188 total number of bytes in the output buffer will be at most
6192 remote_escape_output (const gdb_byte
*buffer
, int len
,
6193 gdb_byte
*out_buf
, int *out_len
,
6196 int input_index
, output_index
;
6199 for (input_index
= 0; input_index
< len
; input_index
++)
6201 gdb_byte b
= buffer
[input_index
];
6203 if (b
== '$' || b
== '#' || b
== '}')
6205 /* These must be escaped. */
6206 if (output_index
+ 2 > out_maxlen
)
6208 out_buf
[output_index
++] = '}';
6209 out_buf
[output_index
++] = b
^ 0x20;
6213 if (output_index
+ 1 > out_maxlen
)
6215 out_buf
[output_index
++] = b
;
6219 *out_len
= input_index
;
6220 return output_index
;
6223 /* Convert BUFFER, escaped data LEN bytes long, into binary data
6224 in OUT_BUF. Return the number of bytes written to OUT_BUF.
6225 Raise an error if the total number of bytes exceeds OUT_MAXLEN.
6227 This function reverses remote_escape_output. It allows more
6228 escaped characters than that function does, in particular because
6229 '*' must be escaped to avoid the run-length encoding processing
6230 in reading packets. */
6233 remote_unescape_input (const gdb_byte
*buffer
, int len
,
6234 gdb_byte
*out_buf
, int out_maxlen
)
6236 int input_index
, output_index
;
6241 for (input_index
= 0; input_index
< len
; input_index
++)
6243 gdb_byte b
= buffer
[input_index
];
6245 if (output_index
+ 1 > out_maxlen
)
6247 warning (_("Received too much data from remote target;"
6248 " ignoring overflow."));
6249 return output_index
;
6254 out_buf
[output_index
++] = b
^ 0x20;
6260 out_buf
[output_index
++] = b
;
6264 error (_("Unmatched escape character in target response."));
6266 return output_index
;
6269 /* Determine whether the remote target supports binary downloading.
6270 This is accomplished by sending a no-op memory write of zero length
6271 to the target at the specified address. It does not suffice to send
6272 the whole packet, since many stubs strip the eighth bit and
6273 subsequently compute a wrong checksum, which causes real havoc with
6276 NOTE: This can still lose if the serial line is not eight-bit
6277 clean. In cases like this, the user should clear "remote
6281 check_binary_download (CORE_ADDR addr
)
6283 struct remote_state
*rs
= get_remote_state ();
6285 switch (remote_protocol_packets
[PACKET_X
].support
)
6287 case PACKET_DISABLE
:
6291 case PACKET_SUPPORT_UNKNOWN
:
6297 p
+= hexnumstr (p
, (ULONGEST
) addr
);
6299 p
+= hexnumstr (p
, (ULONGEST
) 0);
6303 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6304 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6306 if (rs
->buf
[0] == '\0')
6309 fprintf_unfiltered (gdb_stdlog
,
6310 "binary downloading NOT "
6311 "supported by target\n");
6312 remote_protocol_packets
[PACKET_X
].support
= PACKET_DISABLE
;
6317 fprintf_unfiltered (gdb_stdlog
,
6318 "binary downloading supported by target\n");
6319 remote_protocol_packets
[PACKET_X
].support
= PACKET_ENABLE
;
6326 /* Write memory data directly to the remote machine.
6327 This does not inform the data cache; the data cache uses this.
6328 HEADER is the starting part of the packet.
6329 MEMADDR is the address in the remote memory space.
6330 MYADDR is the address of the buffer in our space.
6331 LEN is the number of bytes.
6332 PACKET_FORMAT should be either 'X' or 'M', and indicates if we
6333 should send data as binary ('X'), or hex-encoded ('M').
6335 The function creates packet of the form
6336 <HEADER><ADDRESS>,<LENGTH>:<DATA>
6338 where encoding of <DATA> is termined by PACKET_FORMAT.
6340 If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma
6343 Returns the number of bytes transferred, or 0 (setting errno) for
6344 error. Only transfer a single packet. */
6347 remote_write_bytes_aux (const char *header
, CORE_ADDR memaddr
,
6348 const gdb_byte
*myaddr
, int len
,
6349 char packet_format
, int use_length
)
6351 struct remote_state
*rs
= get_remote_state ();
6361 if (packet_format
!= 'X' && packet_format
!= 'M')
6362 internal_error (__FILE__
, __LINE__
,
6363 _("remote_write_bytes_aux: bad packet format"));
6368 payload_size
= get_memory_write_packet_size ();
6370 /* The packet buffer will be large enough for the payload;
6371 get_memory_packet_size ensures this. */
6374 /* Compute the size of the actual payload by subtracting out the
6375 packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */
6377 payload_size
-= strlen ("$,:#NN");
6379 /* The comma won't be used. */
6381 header_length
= strlen (header
);
6382 payload_size
-= header_length
;
6383 payload_size
-= hexnumlen (memaddr
);
6385 /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */
6387 strcat (rs
->buf
, header
);
6388 p
= rs
->buf
+ strlen (header
);
6390 /* Compute a best guess of the number of bytes actually transfered. */
6391 if (packet_format
== 'X')
6393 /* Best guess at number of bytes that will fit. */
6394 todo
= min (len
, payload_size
);
6396 payload_size
-= hexnumlen (todo
);
6397 todo
= min (todo
, payload_size
);
6401 /* Num bytes that will fit. */
6402 todo
= min (len
, payload_size
/ 2);
6404 payload_size
-= hexnumlen (todo
);
6405 todo
= min (todo
, payload_size
/ 2);
6409 internal_error (__FILE__
, __LINE__
,
6410 _("minimum packet size too small to write data"));
6412 /* If we already need another packet, then try to align the end
6413 of this packet to a useful boundary. */
6414 if (todo
> 2 * REMOTE_ALIGN_WRITES
&& todo
< len
)
6415 todo
= ((memaddr
+ todo
) & ~(REMOTE_ALIGN_WRITES
- 1)) - memaddr
;
6417 /* Append "<memaddr>". */
6418 memaddr
= remote_address_masked (memaddr
);
6419 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6426 /* Append <len>. Retain the location/size of <len>. It may need to
6427 be adjusted once the packet body has been created. */
6429 plenlen
= hexnumstr (p
, (ULONGEST
) todo
);
6437 /* Append the packet body. */
6438 if (packet_format
== 'X')
6440 /* Binary mode. Send target system values byte by byte, in
6441 increasing byte addresses. Only escape certain critical
6443 payload_length
= remote_escape_output (myaddr
, todo
, p
, &nr_bytes
,
6446 /* If not all TODO bytes fit, then we'll need another packet. Make
6447 a second try to keep the end of the packet aligned. Don't do
6448 this if the packet is tiny. */
6449 if (nr_bytes
< todo
&& nr_bytes
> 2 * REMOTE_ALIGN_WRITES
)
6453 new_nr_bytes
= (((memaddr
+ nr_bytes
) & ~(REMOTE_ALIGN_WRITES
- 1))
6455 if (new_nr_bytes
!= nr_bytes
)
6456 payload_length
= remote_escape_output (myaddr
, new_nr_bytes
,
6461 p
+= payload_length
;
6462 if (use_length
&& nr_bytes
< todo
)
6464 /* Escape chars have filled up the buffer prematurely,
6465 and we have actually sent fewer bytes than planned.
6466 Fix-up the length field of the packet. Use the same
6467 number of characters as before. */
6468 plen
+= hexnumnstr (plen
, (ULONGEST
) nr_bytes
, plenlen
);
6469 *plen
= ':'; /* overwrite \0 from hexnumnstr() */
6474 /* Normal mode: Send target system values byte by byte, in
6475 increasing byte addresses. Each byte is encoded as a two hex
6477 nr_bytes
= bin2hex (myaddr
, p
, todo
);
6481 putpkt_binary (rs
->buf
, (int) (p
- rs
->buf
));
6482 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6484 if (rs
->buf
[0] == 'E')
6486 /* There is no correspondance between what the remote protocol
6487 uses for errors and errno codes. We would like a cleaner way
6488 of representing errors (big enough to include errno codes,
6489 bfd_error codes, and others). But for now just return EIO. */
6494 /* Return NR_BYTES, not TODO, in case escape chars caused us to send
6495 fewer bytes than we'd planned. */
6499 /* Write memory data directly to the remote machine.
6500 This does not inform the data cache; the data cache uses this.
6501 MEMADDR is the address in the remote memory space.
6502 MYADDR is the address of the buffer in our space.
6503 LEN is the number of bytes.
6505 Returns number of bytes transferred, or 0 (setting errno) for
6506 error. Only transfer a single packet. */
6509 remote_write_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
6511 char *packet_format
= 0;
6513 /* Check whether the target supports binary download. */
6514 check_binary_download (memaddr
);
6516 switch (remote_protocol_packets
[PACKET_X
].support
)
6519 packet_format
= "X";
6521 case PACKET_DISABLE
:
6522 packet_format
= "M";
6524 case PACKET_SUPPORT_UNKNOWN
:
6525 internal_error (__FILE__
, __LINE__
,
6526 _("remote_write_bytes: bad internal state"));
6528 internal_error (__FILE__
, __LINE__
, _("bad switch"));
6531 return remote_write_bytes_aux (packet_format
,
6532 memaddr
, myaddr
, len
, packet_format
[0], 1);
6535 /* Read memory data directly from the remote machine.
6536 This does not use the data cache; the data cache uses this.
6537 MEMADDR is the address in the remote memory space.
6538 MYADDR is the address of the buffer in our space.
6539 LEN is the number of bytes.
6541 Returns number of bytes transferred, or 0 for error. */
6544 remote_read_bytes (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
6546 struct remote_state
*rs
= get_remote_state ();
6547 int max_buf_size
; /* Max size of packet output buffer. */
6555 max_buf_size
= get_memory_read_packet_size ();
6556 /* The packet buffer will be large enough for the payload;
6557 get_memory_packet_size ensures this. */
6559 /* Number if bytes that will fit. */
6560 todo
= min (len
, max_buf_size
/ 2);
6562 /* Construct "m"<memaddr>","<len>". */
6563 memaddr
= remote_address_masked (memaddr
);
6566 p
+= hexnumstr (p
, (ULONGEST
) memaddr
);
6568 p
+= hexnumstr (p
, (ULONGEST
) todo
);
6571 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6572 if (rs
->buf
[0] == 'E'
6573 && isxdigit (rs
->buf
[1]) && isxdigit (rs
->buf
[2])
6574 && rs
->buf
[3] == '\0')
6576 /* There is no correspondance between what the remote protocol
6577 uses for errors and errno codes. We would like a cleaner way
6578 of representing errors (big enough to include errno codes,
6579 bfd_error codes, and others). But for now just return
6584 /* Reply describes memory byte by byte, each byte encoded as two hex
6587 i
= hex2bin (p
, myaddr
, todo
);
6588 /* Return what we have. Let higher layers handle partial reads. */
6593 /* Remote notification handler. */
6596 handle_notification (char *buf
, size_t length
)
6598 if (strncmp (buf
, "Stop:", 5) == 0)
6600 if (pending_stop_reply
)
6602 /* We've already parsed the in-flight stop-reply, but the
6603 stub for some reason thought we didn't, possibly due to
6604 timeout on its side. Just ignore it. */
6606 fprintf_unfiltered (gdb_stdlog
, "ignoring resent notification\n");
6610 struct cleanup
*old_chain
;
6611 struct stop_reply
*reply
= stop_reply_xmalloc ();
6613 old_chain
= make_cleanup (do_stop_reply_xfree
, reply
);
6615 remote_parse_stop_reply (buf
+ 5, reply
);
6617 discard_cleanups (old_chain
);
6619 /* Be careful to only set it after parsing, since an error
6620 may be thrown then. */
6621 pending_stop_reply
= reply
;
6623 /* Notify the event loop there's a stop reply to acknowledge
6624 and that there may be more events to fetch. */
6625 mark_async_event_handler (remote_async_get_pending_events_token
);
6628 fprintf_unfiltered (gdb_stdlog
, "stop notification captured\n");
6632 /* We ignore notifications we don't recognize, for compatibility
6633 with newer stubs. */
6638 /* Read or write LEN bytes from inferior memory at MEMADDR,
6639 transferring to or from debugger address BUFFER. Write to inferior
6640 if SHOULD_WRITE is nonzero. Returns length of data written or
6641 read; 0 for error. TARGET is unused. */
6644 remote_xfer_memory (CORE_ADDR mem_addr
, gdb_byte
*buffer
, int mem_len
,
6645 int should_write
, struct mem_attrib
*attrib
,
6646 struct target_ops
*target
)
6650 set_remote_traceframe ();
6651 set_general_thread (inferior_ptid
);
6654 res
= remote_write_bytes (mem_addr
, buffer
, mem_len
);
6656 res
= remote_read_bytes (mem_addr
, buffer
, mem_len
);
6661 /* Sends a packet with content determined by the printf format string
6662 FORMAT and the remaining arguments, then gets the reply. Returns
6663 whether the packet was a success, a failure, or unknown. */
6665 static enum packet_result
6666 remote_send_printf (const char *format
, ...)
6668 struct remote_state
*rs
= get_remote_state ();
6669 int max_size
= get_remote_packet_size ();
6672 va_start (ap
, format
);
6675 if (vsnprintf (rs
->buf
, max_size
, format
, ap
) >= max_size
)
6676 internal_error (__FILE__
, __LINE__
, _("Too long remote packet."));
6678 if (putpkt (rs
->buf
) < 0)
6679 error (_("Communication problem with target."));
6682 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
6684 return packet_check_result (rs
->buf
);
6688 restore_remote_timeout (void *p
)
6690 int value
= *(int *)p
;
6692 remote_timeout
= value
;
6695 /* Flash writing can take quite some time. We'll set
6696 effectively infinite timeout for flash operations.
6697 In future, we'll need to decide on a better approach. */
6698 static const int remote_flash_timeout
= 1000;
6701 remote_flash_erase (struct target_ops
*ops
,
6702 ULONGEST address
, LONGEST length
)
6704 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
6705 int saved_remote_timeout
= remote_timeout
;
6706 enum packet_result ret
;
6707 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6708 &saved_remote_timeout
);
6710 remote_timeout
= remote_flash_timeout
;
6712 ret
= remote_send_printf ("vFlashErase:%s,%s",
6713 phex (address
, addr_size
),
6717 case PACKET_UNKNOWN
:
6718 error (_("Remote target does not support flash erase"));
6720 error (_("Error erasing flash with vFlashErase packet"));
6725 do_cleanups (back_to
);
6729 remote_flash_write (struct target_ops
*ops
,
6730 ULONGEST address
, LONGEST length
,
6731 const gdb_byte
*data
)
6733 int saved_remote_timeout
= remote_timeout
;
6735 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6736 &saved_remote_timeout
);
6738 remote_timeout
= remote_flash_timeout
;
6739 ret
= remote_write_bytes_aux ("vFlashWrite:", address
, data
, length
, 'X', 0);
6740 do_cleanups (back_to
);
6746 remote_flash_done (struct target_ops
*ops
)
6748 int saved_remote_timeout
= remote_timeout
;
6750 struct cleanup
*back_to
= make_cleanup (restore_remote_timeout
,
6751 &saved_remote_timeout
);
6753 remote_timeout
= remote_flash_timeout
;
6754 ret
= remote_send_printf ("vFlashDone");
6755 do_cleanups (back_to
);
6759 case PACKET_UNKNOWN
:
6760 error (_("Remote target does not support vFlashDone"));
6762 error (_("Error finishing flash operation"));
6769 remote_files_info (struct target_ops
*ignore
)
6771 puts_filtered ("Debugging a target over a serial line.\n");
6774 /* Stuff for dealing with the packets which are part of this protocol.
6775 See comment at top of file for details. */
6777 /* Read a single character from the remote end. */
6780 readchar (int timeout
)
6784 ch
= serial_readchar (remote_desc
, timeout
);
6789 switch ((enum serial_rc
) ch
)
6793 error (_("Remote connection closed"));
6797 perror_with_name (_("Remote communication error. "
6798 "Target disconnected."));
6800 case SERIAL_TIMEOUT
:
6806 /* Send the command in *BUF to the remote machine, and read the reply
6807 into *BUF. Report an error if we get an error reply. Resize
6808 *BUF using xrealloc if necessary to hold the result, and update
6812 remote_send (char **buf
,
6816 getpkt (buf
, sizeof_buf
, 0);
6818 if ((*buf
)[0] == 'E')
6819 error (_("Remote failure reply: %s"), *buf
);
6822 /* Return a pointer to an xmalloc'ed string representing an escaped
6823 version of BUF, of len N. E.g. \n is converted to \\n, \t to \\t,
6824 etc. The caller is responsible for releasing the returned
6828 escape_buffer (const char *buf
, int n
)
6830 struct cleanup
*old_chain
;
6831 struct ui_file
*stb
;
6834 stb
= mem_fileopen ();
6835 old_chain
= make_cleanup_ui_file_delete (stb
);
6837 fputstrn_unfiltered (buf
, n
, 0, stb
);
6838 str
= ui_file_xstrdup (stb
, NULL
);
6839 do_cleanups (old_chain
);
6843 /* Display a null-terminated packet on stdout, for debugging, using C
6847 print_packet (char *buf
)
6849 puts_filtered ("\"");
6850 fputstr_filtered (buf
, '"', gdb_stdout
);
6851 puts_filtered ("\"");
6857 return putpkt_binary (buf
, strlen (buf
));
6860 /* Send a packet to the remote machine, with error checking. The data
6861 of the packet is in BUF. The string in BUF can be at most
6862 get_remote_packet_size () - 5 to account for the $, # and checksum,
6863 and for a possible /0 if we are debugging (remote_debug) and want
6864 to print the sent packet as a string. */
6867 putpkt_binary (char *buf
, int cnt
)
6869 struct remote_state
*rs
= get_remote_state ();
6871 unsigned char csum
= 0;
6872 char *buf2
= alloca (cnt
+ 6);
6878 /* Catch cases like trying to read memory or listing threads while
6879 we're waiting for a stop reply. The remote server wouldn't be
6880 ready to handle this request, so we'd hang and timeout. We don't
6881 have to worry about this in synchronous mode, because in that
6882 case it's not possible to issue a command while the target is
6883 running. This is not a problem in non-stop mode, because in that
6884 case, the stub is always ready to process serial input. */
6885 if (!non_stop
&& target_can_async_p () && rs
->waiting_for_stop_reply
)
6886 error (_("Cannot execute this command while the target is running."));
6888 /* We're sending out a new packet. Make sure we don't look at a
6889 stale cached response. */
6890 rs
->cached_wait_status
= 0;
6892 /* Copy the packet into buffer BUF2, encapsulating it
6893 and giving it a checksum. */
6898 for (i
= 0; i
< cnt
; i
++)
6904 *p
++ = tohex ((csum
>> 4) & 0xf);
6905 *p
++ = tohex (csum
& 0xf);
6907 /* Send it over and over until we get a positive ack. */
6911 int started_error_output
= 0;
6915 struct cleanup
*old_chain
;
6919 str
= escape_buffer (buf2
, p
- buf2
);
6920 old_chain
= make_cleanup (xfree
, str
);
6921 fprintf_unfiltered (gdb_stdlog
, "Sending packet: %s...", str
);
6922 gdb_flush (gdb_stdlog
);
6923 do_cleanups (old_chain
);
6925 if (serial_write (remote_desc
, buf2
, p
- buf2
))
6926 perror_with_name (_("putpkt: write failed"));
6928 /* If this is a no acks version of the remote protocol, send the
6929 packet and move on. */
6933 /* Read until either a timeout occurs (-2) or '+' is read.
6934 Handle any notification that arrives in the mean time. */
6937 ch
= readchar (remote_timeout
);
6945 case SERIAL_TIMEOUT
:
6948 if (started_error_output
)
6950 putchar_unfiltered ('\n');
6951 started_error_output
= 0;
6960 fprintf_unfiltered (gdb_stdlog
, "Ack\n");
6964 fprintf_unfiltered (gdb_stdlog
, "Nak\n");
6966 case SERIAL_TIMEOUT
:
6970 break; /* Retransmit buffer. */
6974 fprintf_unfiltered (gdb_stdlog
,
6975 "Packet instead of Ack, ignoring it\n");
6976 /* It's probably an old response sent because an ACK
6977 was lost. Gobble up the packet and ack it so it
6978 doesn't get retransmitted when we resend this
6981 serial_write (remote_desc
, "+", 1);
6982 continue; /* Now, go look for +. */
6989 /* If we got a notification, handle it, and go back to looking
6991 /* We've found the start of a notification. Now
6992 collect the data. */
6993 val
= read_frame (&rs
->buf
, &rs
->buf_size
);
6998 struct cleanup
*old_chain
;
7001 str
= escape_buffer (rs
->buf
, val
);
7002 old_chain
= make_cleanup (xfree
, str
);
7003 fprintf_unfiltered (gdb_stdlog
,
7004 " Notification received: %s\n",
7006 do_cleanups (old_chain
);
7008 handle_notification (rs
->buf
, val
);
7009 /* We're in sync now, rewait for the ack. */
7016 if (!started_error_output
)
7018 started_error_output
= 1;
7019 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7021 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7022 fprintf_unfiltered (gdb_stdlog
, "%s", rs
->buf
);
7031 if (!started_error_output
)
7033 started_error_output
= 1;
7034 fprintf_unfiltered (gdb_stdlog
, "putpkt: Junk: ");
7036 fputc_unfiltered (ch
& 0177, gdb_stdlog
);
7040 break; /* Here to retransmit. */
7044 /* This is wrong. If doing a long backtrace, the user should be
7045 able to get out next time we call QUIT, without anything as
7046 violent as interrupt_query. If we want to provide a way out of
7047 here without getting to the next QUIT, it should be based on
7048 hitting ^C twice as in remote_wait. */
7059 /* Come here after finding the start of a frame when we expected an
7060 ack. Do our best to discard the rest of this packet. */
7069 c
= readchar (remote_timeout
);
7072 case SERIAL_TIMEOUT
:
7073 /* Nothing we can do. */
7076 /* Discard the two bytes of checksum and stop. */
7077 c
= readchar (remote_timeout
);
7079 c
= readchar (remote_timeout
);
7082 case '*': /* Run length encoding. */
7083 /* Discard the repeat count. */
7084 c
= readchar (remote_timeout
);
7089 /* A regular character. */
7095 /* Come here after finding the start of the frame. Collect the rest
7096 into *BUF, verifying the checksum, length, and handling run-length
7097 compression. NUL terminate the buffer. If there is not enough room,
7098 expand *BUF using xrealloc.
7100 Returns -1 on error, number of characters in buffer (ignoring the
7101 trailing NULL) on success. (could be extended to return one of the
7102 SERIAL status indications). */
7105 read_frame (char **buf_p
,
7112 struct remote_state
*rs
= get_remote_state ();
7119 c
= readchar (remote_timeout
);
7122 case SERIAL_TIMEOUT
:
7124 fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog
);
7128 fputs_filtered ("Saw new packet start in middle of old one\n",
7130 return -1; /* Start a new packet, count retries. */
7133 unsigned char pktcsum
;
7139 check_0
= readchar (remote_timeout
);
7141 check_1
= readchar (remote_timeout
);
7143 if (check_0
== SERIAL_TIMEOUT
|| check_1
== SERIAL_TIMEOUT
)
7146 fputs_filtered ("Timeout in checksum, retrying\n",
7150 else if (check_0
< 0 || check_1
< 0)
7153 fputs_filtered ("Communication error in checksum\n",
7158 /* Don't recompute the checksum; with no ack packets we
7159 don't have any way to indicate a packet retransmission
7164 pktcsum
= (fromhex (check_0
) << 4) | fromhex (check_1
);
7165 if (csum
== pktcsum
)
7170 struct cleanup
*old_chain
;
7173 str
= escape_buffer (buf
, bc
);
7174 old_chain
= make_cleanup (xfree
, str
);
7175 fprintf_unfiltered (gdb_stdlog
,
7176 "Bad checksum, sentsum=0x%x, "
7177 "csum=0x%x, buf=%s\n",
7178 pktcsum
, csum
, str
);
7179 do_cleanups (old_chain
);
7181 /* Number of characters in buffer ignoring trailing
7185 case '*': /* Run length encoding. */
7190 c
= readchar (remote_timeout
);
7192 repeat
= c
- ' ' + 3; /* Compute repeat count. */
7194 /* The character before ``*'' is repeated. */
7196 if (repeat
> 0 && repeat
<= 255 && bc
> 0)
7198 if (bc
+ repeat
- 1 >= *sizeof_buf
- 1)
7200 /* Make some more room in the buffer. */
7201 *sizeof_buf
+= repeat
;
7202 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7206 memset (&buf
[bc
], buf
[bc
- 1], repeat
);
7212 printf_filtered (_("Invalid run length encoding: %s\n"), buf
);
7216 if (bc
>= *sizeof_buf
- 1)
7218 /* Make some more room in the buffer. */
7220 *buf_p
= xrealloc (*buf_p
, *sizeof_buf
);
7231 /* Read a packet from the remote machine, with error checking, and
7232 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7233 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7234 rather than timing out; this is used (in synchronous mode) to wait
7235 for a target that is is executing user code to stop. */
7236 /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we
7237 don't have to change all the calls to getpkt to deal with the
7238 return value, because at the moment I don't know what the right
7239 thing to do it for those. */
7247 timed_out
= getpkt_sane (buf
, sizeof_buf
, forever
);
7251 /* Read a packet from the remote machine, with error checking, and
7252 store it in *BUF. Resize *BUF using xrealloc if necessary to hold
7253 the result, and update *SIZEOF_BUF. If FOREVER, wait forever
7254 rather than timing out; this is used (in synchronous mode) to wait
7255 for a target that is is executing user code to stop. If FOREVER ==
7256 0, this function is allowed to time out gracefully and return an
7257 indication of this to the caller. Otherwise return the number of
7258 bytes read. If EXPECTING_NOTIF, consider receiving a notification
7259 enough reason to return to the caller. */
7262 getpkt_or_notif_sane_1 (char **buf
, long *sizeof_buf
, int forever
,
7263 int expecting_notif
)
7265 struct remote_state
*rs
= get_remote_state ();
7271 /* We're reading a new response. Make sure we don't look at a
7272 previously cached response. */
7273 rs
->cached_wait_status
= 0;
7275 strcpy (*buf
, "timeout");
7278 timeout
= watchdog
> 0 ? watchdog
: -1;
7279 else if (expecting_notif
)
7280 timeout
= 0; /* There should already be a char in the buffer. If
7283 timeout
= remote_timeout
;
7287 /* Process any number of notifications, and then return when
7291 /* If we get a timeout or bad checksm, retry up to MAX_TRIES
7293 for (tries
= 1; tries
<= MAX_TRIES
; tries
++)
7295 /* This can loop forever if the remote side sends us
7296 characters continuously, but if it pauses, we'll get
7297 SERIAL_TIMEOUT from readchar because of timeout. Then
7298 we'll count that as a retry.
7300 Note that even when forever is set, we will only wait
7301 forever prior to the start of a packet. After that, we
7302 expect characters to arrive at a brisk pace. They should
7303 show up within remote_timeout intervals. */
7305 c
= readchar (timeout
);
7306 while (c
!= SERIAL_TIMEOUT
&& c
!= '$' && c
!= '%');
7308 if (c
== SERIAL_TIMEOUT
)
7310 if (expecting_notif
)
7311 return -1; /* Don't complain, it's normal to not get
7312 anything in this case. */
7314 if (forever
) /* Watchdog went off? Kill the target. */
7318 error (_("Watchdog timeout has expired. Target detached."));
7321 fputs_filtered ("Timed out.\n", gdb_stdlog
);
7325 /* We've found the start of a packet or notification.
7326 Now collect the data. */
7327 val
= read_frame (buf
, sizeof_buf
);
7332 serial_write (remote_desc
, "-", 1);
7335 if (tries
> MAX_TRIES
)
7337 /* We have tried hard enough, and just can't receive the
7338 packet/notification. Give up. */
7339 printf_unfiltered (_("Ignoring packet error, continuing...\n"));
7341 /* Skip the ack char if we're in no-ack mode. */
7342 if (!rs
->noack_mode
)
7343 serial_write (remote_desc
, "+", 1);
7347 /* If we got an ordinary packet, return that to our caller. */
7352 struct cleanup
*old_chain
;
7355 str
= escape_buffer (*buf
, val
);
7356 old_chain
= make_cleanup (xfree
, str
);
7357 fprintf_unfiltered (gdb_stdlog
, "Packet received: %s\n", str
);
7358 do_cleanups (old_chain
);
7361 /* Skip the ack char if we're in no-ack mode. */
7362 if (!rs
->noack_mode
)
7363 serial_write (remote_desc
, "+", 1);
7367 /* If we got a notification, handle it, and go back to looking
7371 gdb_assert (c
== '%');
7375 struct cleanup
*old_chain
;
7378 str
= escape_buffer (*buf
, val
);
7379 old_chain
= make_cleanup (xfree
, str
);
7380 fprintf_unfiltered (gdb_stdlog
,
7381 " Notification received: %s\n",
7383 do_cleanups (old_chain
);
7386 handle_notification (*buf
, val
);
7388 /* Notifications require no acknowledgement. */
7390 if (expecting_notif
)
7397 getpkt_sane (char **buf
, long *sizeof_buf
, int forever
)
7399 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 0);
7403 getpkt_or_notif_sane (char **buf
, long *sizeof_buf
, int forever
)
7405 return getpkt_or_notif_sane_1 (buf
, sizeof_buf
, forever
, 1);
7409 /* A helper function that just calls putpkt; for type correctness. */
7412 putpkt_for_catch_errors (void *arg
)
7414 return putpkt (arg
);
7418 remote_kill (struct target_ops
*ops
)
7420 /* Use catch_errors so the user can quit from gdb even when we
7421 aren't on speaking terms with the remote system. */
7422 catch_errors (putpkt_for_catch_errors
, "k", "", RETURN_MASK_ERROR
);
7424 /* Don't wait for it to die. I'm not really sure it matters whether
7425 we do or not. For the existing stubs, kill is a noop. */
7426 target_mourn_inferior ();
7430 remote_vkill (int pid
, struct remote_state
*rs
)
7432 if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7435 /* Tell the remote target to detach. */
7436 sprintf (rs
->buf
, "vKill;%x", pid
);
7438 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7440 if (packet_ok (rs
->buf
,
7441 &remote_protocol_packets
[PACKET_vKill
]) == PACKET_OK
)
7443 else if (remote_protocol_packets
[PACKET_vKill
].support
== PACKET_DISABLE
)
7450 extended_remote_kill (struct target_ops
*ops
)
7453 int pid
= ptid_get_pid (inferior_ptid
);
7454 struct remote_state
*rs
= get_remote_state ();
7456 res
= remote_vkill (pid
, rs
);
7457 if (res
== -1 && !(rs
->extended
&& remote_multi_process_p (rs
)))
7459 /* Don't try 'k' on a multi-process aware stub -- it has no way
7460 to specify the pid. */
7464 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7465 if (rs
->buf
[0] != 'O' || rs
->buf
[0] != 'K')
7468 /* Don't wait for it to die. I'm not really sure it matters whether
7469 we do or not. For the existing stubs, kill is a noop. */
7475 error (_("Can't kill process"));
7477 target_mourn_inferior ();
7481 remote_mourn (struct target_ops
*ops
)
7483 remote_mourn_1 (ops
);
7486 /* Worker function for remote_mourn. */
7488 remote_mourn_1 (struct target_ops
*target
)
7490 unpush_target (target
);
7492 /* remote_close takes care of doing most of the clean up. */
7493 generic_mourn_inferior ();
7497 extended_remote_mourn_1 (struct target_ops
*target
)
7499 struct remote_state
*rs
= get_remote_state ();
7501 /* In case we got here due to an error, but we're going to stay
7503 rs
->waiting_for_stop_reply
= 0;
7505 /* We're no longer interested in these events. */
7506 discard_pending_stop_replies (ptid_get_pid (inferior_ptid
));
7508 /* If the current general thread belonged to the process we just
7509 detached from or has exited, the remote side current general
7510 thread becomes undefined. Considering a case like this:
7512 - We just got here due to a detach.
7513 - The process that we're detaching from happens to immediately
7514 report a global breakpoint being hit in non-stop mode, in the
7515 same thread we had selected before.
7516 - GDB attaches to this process again.
7517 - This event happens to be the next event we handle.
7519 GDB would consider that the current general thread didn't need to
7520 be set on the stub side (with Hg), since for all it knew,
7521 GENERAL_THREAD hadn't changed.
7523 Notice that although in all-stop mode, the remote server always
7524 sets the current thread to the thread reporting the stop event,
7525 that doesn't happen in non-stop mode; in non-stop, the stub *must
7526 not* change the current thread when reporting a breakpoint hit,
7527 due to the decoupling of event reporting and event handling.
7529 To keep things simple, we always invalidate our notion of the
7531 record_currthread (minus_one_ptid
);
7533 /* Unlike "target remote", we do not want to unpush the target; then
7534 the next time the user says "run", we won't be connected. */
7536 /* Call common code to mark the inferior as not running. */
7537 generic_mourn_inferior ();
7539 if (!have_inferiors ())
7541 if (!remote_multi_process_p (rs
))
7543 /* Check whether the target is running now - some remote stubs
7544 automatically restart after kill. */
7546 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7548 if (rs
->buf
[0] == 'S' || rs
->buf
[0] == 'T')
7550 /* Assume that the target has been restarted. Set
7551 inferior_ptid so that bits of core GDB realizes
7552 there's something here, e.g., so that the user can
7553 say "kill" again. */
7554 inferior_ptid
= magic_null_ptid
;
7561 extended_remote_mourn (struct target_ops
*ops
)
7563 extended_remote_mourn_1 (ops
);
7567 extended_remote_supports_disable_randomization (void)
7569 return (remote_protocol_packets
[PACKET_QDisableRandomization
].support
7574 extended_remote_disable_randomization (int val
)
7576 struct remote_state
*rs
= get_remote_state ();
7579 sprintf (rs
->buf
, "QDisableRandomization:%x", val
);
7581 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
7583 error (_("Target does not support QDisableRandomization."));
7584 if (strcmp (reply
, "OK") != 0)
7585 error (_("Bogus QDisableRandomization reply from target: %s"), reply
);
7589 extended_remote_run (char *args
)
7591 struct remote_state
*rs
= get_remote_state ();
7594 /* If the user has disabled vRun support, or we have detected that
7595 support is not available, do not try it. */
7596 if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7599 strcpy (rs
->buf
, "vRun;");
7600 len
= strlen (rs
->buf
);
7602 if (strlen (remote_exec_file
) * 2 + len
>= get_remote_packet_size ())
7603 error (_("Remote file name too long for run packet"));
7604 len
+= 2 * bin2hex ((gdb_byte
*) remote_exec_file
, rs
->buf
+ len
, 0);
7606 gdb_assert (args
!= NULL
);
7609 struct cleanup
*back_to
;
7613 argv
= gdb_buildargv (args
);
7614 back_to
= make_cleanup ((void (*) (void *)) freeargv
, argv
);
7615 for (i
= 0; argv
[i
] != NULL
; i
++)
7617 if (strlen (argv
[i
]) * 2 + 1 + len
>= get_remote_packet_size ())
7618 error (_("Argument list too long for run packet"));
7619 rs
->buf
[len
++] = ';';
7620 len
+= 2 * bin2hex ((gdb_byte
*) argv
[i
], rs
->buf
+ len
, 0);
7622 do_cleanups (back_to
);
7625 rs
->buf
[len
++] = '\0';
7628 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7630 if (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_vRun
]) == PACKET_OK
)
7632 /* We have a wait response; we don't need it, though. All is well. */
7635 else if (remote_protocol_packets
[PACKET_vRun
].support
== PACKET_DISABLE
)
7636 /* It wasn't disabled before, but it is now. */
7640 if (remote_exec_file
[0] == '\0')
7641 error (_("Running the default executable on the remote target failed; "
7642 "try \"set remote exec-file\"?"));
7644 error (_("Running \"%s\" on the remote target failed"),
7649 /* In the extended protocol we want to be able to do things like
7650 "run" and have them basically work as expected. So we need
7651 a special create_inferior function. We support changing the
7652 executable file and the command line arguments, but not the
7656 extended_remote_create_inferior_1 (char *exec_file
, char *args
,
7657 char **env
, int from_tty
)
7659 /* If running asynchronously, register the target file descriptor
7660 with the event loop. */
7661 if (target_can_async_p ())
7662 target_async (inferior_event_handler
, 0);
7664 /* Disable address space randomization if requested (and supported). */
7665 if (extended_remote_supports_disable_randomization ())
7666 extended_remote_disable_randomization (disable_randomization
);
7668 /* Now restart the remote server. */
7669 if (extended_remote_run (args
) == -1)
7671 /* vRun was not supported. Fail if we need it to do what the
7673 if (remote_exec_file
[0])
7674 error (_("Remote target does not support \"set remote exec-file\""));
7676 error (_("Remote target does not support \"set args\" or run <ARGS>"));
7678 /* Fall back to "R". */
7679 extended_remote_restart ();
7682 if (!have_inferiors ())
7684 /* Clean up from the last time we ran, before we mark the target
7685 running again. This will mark breakpoints uninserted, and
7686 get_offsets may insert breakpoints. */
7687 init_thread_list ();
7688 init_wait_for_inferior ();
7691 add_current_inferior_and_thread ();
7693 /* Get updated offsets, if the stub uses qOffsets. */
7698 extended_remote_create_inferior (struct target_ops
*ops
,
7699 char *exec_file
, char *args
,
7700 char **env
, int from_tty
)
7702 extended_remote_create_inferior_1 (exec_file
, args
, env
, from_tty
);
7706 /* Insert a breakpoint. On targets that have software breakpoint
7707 support, we ask the remote target to do the work; on targets
7708 which don't, we insert a traditional memory breakpoint. */
7711 remote_insert_breakpoint (struct gdbarch
*gdbarch
,
7712 struct bp_target_info
*bp_tgt
)
7714 /* Try the "Z" s/w breakpoint packet if it is not already disabled.
7715 If it succeeds, then set the support to PACKET_ENABLE. If it
7716 fails, and the user has explicitly requested the Z support then
7717 report an error, otherwise, mark it disabled and go on. */
7719 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7721 CORE_ADDR addr
= bp_tgt
->placed_address
;
7722 struct remote_state
*rs
;
7726 gdbarch_remote_breakpoint_from_pc (gdbarch
, &addr
, &bpsize
);
7728 rs
= get_remote_state ();
7734 addr
= (ULONGEST
) remote_address_masked (addr
);
7735 p
+= hexnumstr (p
, addr
);
7736 sprintf (p
, ",%d", bpsize
);
7739 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7741 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
]))
7746 bp_tgt
->placed_address
= addr
;
7747 bp_tgt
->placed_size
= bpsize
;
7749 case PACKET_UNKNOWN
:
7754 return memory_insert_breakpoint (gdbarch
, bp_tgt
);
7758 remote_remove_breakpoint (struct gdbarch
*gdbarch
,
7759 struct bp_target_info
*bp_tgt
)
7761 CORE_ADDR addr
= bp_tgt
->placed_address
;
7762 struct remote_state
*rs
= get_remote_state ();
7764 if (remote_protocol_packets
[PACKET_Z0
].support
!= PACKET_DISABLE
)
7772 addr
= (ULONGEST
) remote_address_masked (bp_tgt
->placed_address
);
7773 p
+= hexnumstr (p
, addr
);
7774 sprintf (p
, ",%d", bp_tgt
->placed_size
);
7777 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7779 return (rs
->buf
[0] == 'E');
7782 return memory_remove_breakpoint (gdbarch
, bp_tgt
);
7786 watchpoint_to_Z_packet (int type
)
7791 return Z_PACKET_WRITE_WP
;
7794 return Z_PACKET_READ_WP
;
7797 return Z_PACKET_ACCESS_WP
;
7800 internal_error (__FILE__
, __LINE__
,
7801 _("hw_bp_to_z: bad watchpoint type %d"), type
);
7806 remote_insert_watchpoint (CORE_ADDR addr
, int len
, int type
,
7807 struct expression
*cond
)
7809 struct remote_state
*rs
= get_remote_state ();
7811 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7813 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7816 sprintf (rs
->buf
, "Z%x,", packet
);
7817 p
= strchr (rs
->buf
, '\0');
7818 addr
= remote_address_masked (addr
);
7819 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7820 sprintf (p
, ",%x", len
);
7823 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7825 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7829 case PACKET_UNKNOWN
:
7834 internal_error (__FILE__
, __LINE__
,
7835 _("remote_insert_watchpoint: reached end of function"));
7840 remote_remove_watchpoint (CORE_ADDR addr
, int len
, int type
,
7841 struct expression
*cond
)
7843 struct remote_state
*rs
= get_remote_state ();
7845 enum Z_packet_type packet
= watchpoint_to_Z_packet (type
);
7847 if (remote_protocol_packets
[PACKET_Z0
+ packet
].support
== PACKET_DISABLE
)
7850 sprintf (rs
->buf
, "z%x,", packet
);
7851 p
= strchr (rs
->buf
, '\0');
7852 addr
= remote_address_masked (addr
);
7853 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7854 sprintf (p
, ",%x", len
);
7856 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7858 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z0
+ packet
]))
7861 case PACKET_UNKNOWN
:
7866 internal_error (__FILE__
, __LINE__
,
7867 _("remote_remove_watchpoint: reached end of function"));
7871 int remote_hw_watchpoint_limit
= -1;
7872 int remote_hw_watchpoint_length_limit
= -1;
7873 int remote_hw_breakpoint_limit
= -1;
7876 remote_region_ok_for_hw_watchpoint (CORE_ADDR addr
, int len
)
7878 if (remote_hw_watchpoint_length_limit
== 0)
7880 else if (remote_hw_watchpoint_length_limit
< 0)
7882 else if (len
<= remote_hw_watchpoint_length_limit
)
7889 remote_check_watch_resources (int type
, int cnt
, int ot
)
7891 if (type
== bp_hardware_breakpoint
)
7893 if (remote_hw_breakpoint_limit
== 0)
7895 else if (remote_hw_breakpoint_limit
< 0)
7897 else if (cnt
<= remote_hw_breakpoint_limit
)
7902 if (remote_hw_watchpoint_limit
== 0)
7904 else if (remote_hw_watchpoint_limit
< 0)
7908 else if (cnt
<= remote_hw_watchpoint_limit
)
7915 remote_stopped_by_watchpoint (void)
7917 return remote_stopped_by_watchpoint_p
;
7921 remote_stopped_data_address (struct target_ops
*target
, CORE_ADDR
*addr_p
)
7925 if (remote_stopped_by_watchpoint ())
7927 *addr_p
= remote_watch_data_address
;
7936 remote_insert_hw_breakpoint (struct gdbarch
*gdbarch
,
7937 struct bp_target_info
*bp_tgt
)
7940 struct remote_state
*rs
;
7943 /* The length field should be set to the size of a breakpoint
7944 instruction, even though we aren't inserting one ourselves. */
7946 gdbarch_remote_breakpoint_from_pc
7947 (gdbarch
, &bp_tgt
->placed_address
, &bp_tgt
->placed_size
);
7949 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7952 rs
= get_remote_state ();
7959 addr
= remote_address_masked (bp_tgt
->placed_address
);
7960 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7961 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7964 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
7966 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
7969 case PACKET_UNKNOWN
:
7974 internal_error (__FILE__
, __LINE__
,
7975 _("remote_insert_hw_breakpoint: reached end of function"));
7980 remote_remove_hw_breakpoint (struct gdbarch
*gdbarch
,
7981 struct bp_target_info
*bp_tgt
)
7984 struct remote_state
*rs
= get_remote_state ();
7987 if (remote_protocol_packets
[PACKET_Z1
].support
== PACKET_DISABLE
)
7994 addr
= remote_address_masked (bp_tgt
->placed_address
);
7995 p
+= hexnumstr (p
, (ULONGEST
) addr
);
7996 sprintf (p
, ",%x", bp_tgt
->placed_size
);
7999 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8001 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[PACKET_Z1
]))
8004 case PACKET_UNKNOWN
:
8009 internal_error (__FILE__
, __LINE__
,
8010 _("remote_remove_hw_breakpoint: reached end of function"));
8013 /* Table used by the crc32 function to calcuate the checksum. */
8015 static unsigned long crc32_table
[256] =
8018 static unsigned long
8019 crc32 (const unsigned char *buf
, int len
, unsigned int crc
)
8021 if (!crc32_table
[1])
8023 /* Initialize the CRC table and the decoding table. */
8027 for (i
= 0; i
< 256; i
++)
8029 for (c
= i
<< 24, j
= 8; j
> 0; --j
)
8030 c
= c
& 0x80000000 ? (c
<< 1) ^ 0x04c11db7 : (c
<< 1);
8037 crc
= (crc
<< 8) ^ crc32_table
[((crc
>> 24) ^ *buf
) & 255];
8043 /* Verify memory using the "qCRC:" request. */
8046 remote_verify_memory (struct target_ops
*ops
,
8047 const gdb_byte
*data
, CORE_ADDR lma
, ULONGEST size
)
8049 struct remote_state
*rs
= get_remote_state ();
8050 unsigned long host_crc
, target_crc
;
8053 /* FIXME: assumes lma can fit into long. */
8054 xsnprintf (rs
->buf
, get_remote_packet_size (), "qCRC:%lx,%lx",
8055 (long) lma
, (long) size
);
8058 /* Be clever; compute the host_crc before waiting for target
8060 host_crc
= crc32 (data
, size
, 0xffffffff);
8062 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8063 if (rs
->buf
[0] == 'E')
8066 if (rs
->buf
[0] != 'C')
8067 error (_("remote target does not support this operation"));
8069 for (target_crc
= 0, tmp
= &rs
->buf
[1]; *tmp
; tmp
++)
8070 target_crc
= target_crc
* 16 + fromhex (*tmp
);
8072 return (host_crc
== target_crc
);
8075 /* compare-sections command
8077 With no arguments, compares each loadable section in the exec bfd
8078 with the same memory range on the target, and reports mismatches.
8079 Useful for verifying the image on the target against the exec file. */
8082 compare_sections_command (char *args
, int from_tty
)
8085 struct cleanup
*old_chain
;
8087 const char *sectname
;
8095 error (_("command cannot be used without an exec file"));
8097 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
8099 if (!(s
->flags
& SEC_LOAD
))
8100 continue; /* Skip non-loadable section. */
8102 size
= bfd_get_section_size (s
);
8104 continue; /* Skip zero-length section. */
8106 sectname
= bfd_get_section_name (exec_bfd
, s
);
8107 if (args
&& strcmp (args
, sectname
) != 0)
8108 continue; /* Not the section selected by user. */
8110 matched
= 1; /* Do this section. */
8113 sectdata
= xmalloc (size
);
8114 old_chain
= make_cleanup (xfree
, sectdata
);
8115 bfd_get_section_contents (exec_bfd
, s
, sectdata
, 0, size
);
8117 res
= target_verify_memory (sectdata
, lma
, size
);
8120 error (_("target memory fault, section %s, range %s -- %s"), sectname
,
8121 paddress (target_gdbarch
, lma
),
8122 paddress (target_gdbarch
, lma
+ size
));
8124 printf_filtered ("Section %s, range %s -- %s: ", sectname
,
8125 paddress (target_gdbarch
, lma
),
8126 paddress (target_gdbarch
, lma
+ size
));
8128 printf_filtered ("matched.\n");
8131 printf_filtered ("MIS-MATCHED!\n");
8135 do_cleanups (old_chain
);
8138 warning (_("One or more sections of the remote executable does not match\n\
8139 the loaded file\n"));
8140 if (args
&& !matched
)
8141 printf_filtered (_("No loaded section named '%s'.\n"), args
);
8144 /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET
8145 into remote target. The number of bytes written to the remote
8146 target is returned, or -1 for error. */
8149 remote_write_qxfer (struct target_ops
*ops
, const char *object_name
,
8150 const char *annex
, const gdb_byte
*writebuf
,
8151 ULONGEST offset
, LONGEST len
,
8152 struct packet_config
*packet
)
8156 struct remote_state
*rs
= get_remote_state ();
8157 int max_size
= get_memory_write_packet_size ();
8159 if (packet
->support
== PACKET_DISABLE
)
8162 /* Insert header. */
8163 i
= snprintf (rs
->buf
, max_size
,
8164 "qXfer:%s:write:%s:%s:",
8165 object_name
, annex
? annex
: "",
8166 phex_nz (offset
, sizeof offset
));
8167 max_size
-= (i
+ 1);
8169 /* Escape as much data as fits into rs->buf. */
8170 buf_len
= remote_escape_output
8171 (writebuf
, len
, (rs
->buf
+ i
), &max_size
, max_size
);
8173 if (putpkt_binary (rs
->buf
, i
+ buf_len
) < 0
8174 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8175 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8178 unpack_varlen_hex (rs
->buf
, &n
);
8182 /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
8183 Data at OFFSET, of up to LEN bytes, is read into READBUF; the
8184 number of bytes read is returned, or 0 for EOF, or -1 for error.
8185 The number of bytes read may be less than LEN without indicating an
8186 EOF. PACKET is checked and updated to indicate whether the remote
8187 target supports this object. */
8190 remote_read_qxfer (struct target_ops
*ops
, const char *object_name
,
8192 gdb_byte
*readbuf
, ULONGEST offset
, LONGEST len
,
8193 struct packet_config
*packet
)
8195 static char *finished_object
;
8196 static char *finished_annex
;
8197 static ULONGEST finished_offset
;
8199 struct remote_state
*rs
= get_remote_state ();
8200 LONGEST i
, n
, packet_len
;
8202 if (packet
->support
== PACKET_DISABLE
)
8205 /* Check whether we've cached an end-of-object packet that matches
8207 if (finished_object
)
8209 if (strcmp (object_name
, finished_object
) == 0
8210 && strcmp (annex
? annex
: "", finished_annex
) == 0
8211 && offset
== finished_offset
)
8214 /* Otherwise, we're now reading something different. Discard
8216 xfree (finished_object
);
8217 xfree (finished_annex
);
8218 finished_object
= NULL
;
8219 finished_annex
= NULL
;
8222 /* Request only enough to fit in a single packet. The actual data
8223 may not, since we don't know how much of it will need to be escaped;
8224 the target is free to respond with slightly less data. We subtract
8225 five to account for the response type and the protocol frame. */
8226 n
= min (get_remote_packet_size () - 5, len
);
8227 snprintf (rs
->buf
, get_remote_packet_size () - 4, "qXfer:%s:read:%s:%s,%s",
8228 object_name
, annex
? annex
: "",
8229 phex_nz (offset
, sizeof offset
),
8230 phex_nz (n
, sizeof n
));
8231 i
= putpkt (rs
->buf
);
8236 packet_len
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
8237 if (packet_len
< 0 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8240 if (rs
->buf
[0] != 'l' && rs
->buf
[0] != 'm')
8241 error (_("Unknown remote qXfer reply: %s"), rs
->buf
);
8243 /* 'm' means there is (or at least might be) more data after this
8244 batch. That does not make sense unless there's at least one byte
8245 of data in this reply. */
8246 if (rs
->buf
[0] == 'm' && packet_len
== 1)
8247 error (_("Remote qXfer reply contained no data."));
8249 /* Got some data. */
8250 i
= remote_unescape_input (rs
->buf
+ 1, packet_len
- 1, readbuf
, n
);
8252 /* 'l' is an EOF marker, possibly including a final block of data,
8253 or possibly empty. If we have the final block of a non-empty
8254 object, record this fact to bypass a subsequent partial read. */
8255 if (rs
->buf
[0] == 'l' && offset
+ i
> 0)
8257 finished_object
= xstrdup (object_name
);
8258 finished_annex
= xstrdup (annex
? annex
: "");
8259 finished_offset
= offset
+ i
;
8266 remote_xfer_partial (struct target_ops
*ops
, enum target_object object
,
8267 const char *annex
, gdb_byte
*readbuf
,
8268 const gdb_byte
*writebuf
, ULONGEST offset
, LONGEST len
)
8270 struct remote_state
*rs
;
8275 set_remote_traceframe ();
8276 set_general_thread (inferior_ptid
);
8278 rs
= get_remote_state ();
8280 /* Handle memory using the standard memory routines. */
8281 if (object
== TARGET_OBJECT_MEMORY
)
8287 /* If the remote target is connected but not running, we should
8288 pass this request down to a lower stratum (e.g. the executable
8290 if (!target_has_execution
)
8293 if (writebuf
!= NULL
)
8294 xfered
= remote_write_bytes (offset
, writebuf
, len
);
8296 xfered
= remote_read_bytes (offset
, readbuf
, len
);
8300 else if (xfered
== 0 && errno
== 0)
8306 /* Handle SPU memory using qxfer packets. */
8307 if (object
== TARGET_OBJECT_SPU
)
8310 return remote_read_qxfer (ops
, "spu", annex
, readbuf
, offset
, len
,
8311 &remote_protocol_packets
8312 [PACKET_qXfer_spu_read
]);
8314 return remote_write_qxfer (ops
, "spu", annex
, writebuf
, offset
, len
,
8315 &remote_protocol_packets
8316 [PACKET_qXfer_spu_write
]);
8319 /* Handle extra signal info using qxfer packets. */
8320 if (object
== TARGET_OBJECT_SIGNAL_INFO
)
8323 return remote_read_qxfer (ops
, "siginfo", annex
, readbuf
, offset
, len
,
8324 &remote_protocol_packets
8325 [PACKET_qXfer_siginfo_read
]);
8327 return remote_write_qxfer (ops
, "siginfo", annex
,
8328 writebuf
, offset
, len
,
8329 &remote_protocol_packets
8330 [PACKET_qXfer_siginfo_write
]);
8333 if (object
== TARGET_OBJECT_STATIC_TRACE_DATA
)
8336 return remote_read_qxfer (ops
, "statictrace", annex
,
8337 readbuf
, offset
, len
,
8338 &remote_protocol_packets
8339 [PACKET_qXfer_statictrace_read
]);
8344 /* Only handle flash writes. */
8345 if (writebuf
!= NULL
)
8351 case TARGET_OBJECT_FLASH
:
8352 xfered
= remote_flash_write (ops
, offset
, len
, writebuf
);
8356 else if (xfered
== 0 && errno
== 0)
8366 /* Map pre-existing objects onto letters. DO NOT do this for new
8367 objects!!! Instead specify new query packets. */
8370 case TARGET_OBJECT_AVR
:
8374 case TARGET_OBJECT_AUXV
:
8375 gdb_assert (annex
== NULL
);
8376 return remote_read_qxfer (ops
, "auxv", annex
, readbuf
, offset
, len
,
8377 &remote_protocol_packets
[PACKET_qXfer_auxv
]);
8379 case TARGET_OBJECT_AVAILABLE_FEATURES
:
8380 return remote_read_qxfer
8381 (ops
, "features", annex
, readbuf
, offset
, len
,
8382 &remote_protocol_packets
[PACKET_qXfer_features
]);
8384 case TARGET_OBJECT_LIBRARIES
:
8385 return remote_read_qxfer
8386 (ops
, "libraries", annex
, readbuf
, offset
, len
,
8387 &remote_protocol_packets
[PACKET_qXfer_libraries
]);
8389 case TARGET_OBJECT_LIBRARIES_SVR4
:
8390 return remote_read_qxfer
8391 (ops
, "libraries-svr4", annex
, readbuf
, offset
, len
,
8392 &remote_protocol_packets
[PACKET_qXfer_libraries_svr4
]);
8394 case TARGET_OBJECT_MEMORY_MAP
:
8395 gdb_assert (annex
== NULL
);
8396 return remote_read_qxfer (ops
, "memory-map", annex
, readbuf
, offset
, len
,
8397 &remote_protocol_packets
[PACKET_qXfer_memory_map
]);
8399 case TARGET_OBJECT_OSDATA
:
8400 /* Should only get here if we're connected. */
8401 gdb_assert (remote_desc
);
8402 return remote_read_qxfer
8403 (ops
, "osdata", annex
, readbuf
, offset
, len
,
8404 &remote_protocol_packets
[PACKET_qXfer_osdata
]);
8406 case TARGET_OBJECT_THREADS
:
8407 gdb_assert (annex
== NULL
);
8408 return remote_read_qxfer (ops
, "threads", annex
, readbuf
, offset
, len
,
8409 &remote_protocol_packets
[PACKET_qXfer_threads
]);
8411 case TARGET_OBJECT_TRACEFRAME_INFO
:
8412 gdb_assert (annex
== NULL
);
8413 return remote_read_qxfer
8414 (ops
, "traceframe-info", annex
, readbuf
, offset
, len
,
8415 &remote_protocol_packets
[PACKET_qXfer_traceframe_info
]);
8417 case TARGET_OBJECT_FDPIC
:
8418 return remote_read_qxfer (ops
, "fdpic", annex
, readbuf
, offset
, len
,
8419 &remote_protocol_packets
[PACKET_qXfer_fdpic
]);
8424 /* Note: a zero OFFSET and LEN can be used to query the minimum
8426 if (offset
== 0 && len
== 0)
8427 return (get_remote_packet_size ());
8428 /* Minimum outbuf size is get_remote_packet_size (). If LEN is not
8429 large enough let the caller deal with it. */
8430 if (len
< get_remote_packet_size ())
8432 len
= get_remote_packet_size ();
8434 /* Except for querying the minimum buffer size, target must be open. */
8436 error (_("remote query is only available after target open"));
8438 gdb_assert (annex
!= NULL
);
8439 gdb_assert (readbuf
!= NULL
);
8445 /* We used one buffer char for the remote protocol q command and
8446 another for the query type. As the remote protocol encapsulation
8447 uses 4 chars plus one extra in case we are debugging
8448 (remote_debug), we have PBUFZIZ - 7 left to pack the query
8451 while (annex
[i
] && (i
< (get_remote_packet_size () - 8)))
8453 /* Bad caller may have sent forbidden characters. */
8454 gdb_assert (isprint (annex
[i
]) && annex
[i
] != '$' && annex
[i
] != '#');
8459 gdb_assert (annex
[i
] == '\0');
8461 i
= putpkt (rs
->buf
);
8465 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8466 strcpy ((char *) readbuf
, rs
->buf
);
8468 return strlen ((char *) readbuf
);
8472 remote_search_memory (struct target_ops
* ops
,
8473 CORE_ADDR start_addr
, ULONGEST search_space_len
,
8474 const gdb_byte
*pattern
, ULONGEST pattern_len
,
8475 CORE_ADDR
*found_addrp
)
8477 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
8478 struct remote_state
*rs
= get_remote_state ();
8479 int max_size
= get_memory_write_packet_size ();
8480 struct packet_config
*packet
=
8481 &remote_protocol_packets
[PACKET_qSearch_memory
];
8482 /* Number of packet bytes used to encode the pattern;
8483 this could be more than PATTERN_LEN due to escape characters. */
8484 int escaped_pattern_len
;
8485 /* Amount of pattern that was encodable in the packet. */
8486 int used_pattern_len
;
8489 ULONGEST found_addr
;
8491 /* Don't go to the target if we don't have to.
8492 This is done before checking packet->support to avoid the possibility that
8493 a success for this edge case means the facility works in general. */
8494 if (pattern_len
> search_space_len
)
8496 if (pattern_len
== 0)
8498 *found_addrp
= start_addr
;
8502 /* If we already know the packet isn't supported, fall back to the simple
8503 way of searching memory. */
8505 if (packet
->support
== PACKET_DISABLE
)
8507 /* Target doesn't provided special support, fall back and use the
8508 standard support (copy memory and do the search here). */
8509 return simple_search_memory (ops
, start_addr
, search_space_len
,
8510 pattern
, pattern_len
, found_addrp
);
8513 /* Insert header. */
8514 i
= snprintf (rs
->buf
, max_size
,
8515 "qSearch:memory:%s;%s;",
8516 phex_nz (start_addr
, addr_size
),
8517 phex_nz (search_space_len
, sizeof (search_space_len
)));
8518 max_size
-= (i
+ 1);
8520 /* Escape as much data as fits into rs->buf. */
8521 escaped_pattern_len
=
8522 remote_escape_output (pattern
, pattern_len
, (rs
->buf
+ i
),
8523 &used_pattern_len
, max_size
);
8525 /* Bail if the pattern is too large. */
8526 if (used_pattern_len
!= pattern_len
)
8527 error (_("Pattern is too large to transmit to remote target."));
8529 if (putpkt_binary (rs
->buf
, i
+ escaped_pattern_len
) < 0
8530 || getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) < 0
8531 || packet_ok (rs
->buf
, packet
) != PACKET_OK
)
8533 /* The request may not have worked because the command is not
8534 supported. If so, fall back to the simple way. */
8535 if (packet
->support
== PACKET_DISABLE
)
8537 return simple_search_memory (ops
, start_addr
, search_space_len
,
8538 pattern
, pattern_len
, found_addrp
);
8543 if (rs
->buf
[0] == '0')
8545 else if (rs
->buf
[0] == '1')
8548 if (rs
->buf
[1] != ',')
8549 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8550 unpack_varlen_hex (rs
->buf
+ 2, &found_addr
);
8551 *found_addrp
= found_addr
;
8554 error (_("Unknown qSearch:memory reply: %s"), rs
->buf
);
8560 remote_rcmd (char *command
,
8561 struct ui_file
*outbuf
)
8563 struct remote_state
*rs
= get_remote_state ();
8567 error (_("remote rcmd is only available after target open"));
8569 /* Send a NULL command across as an empty command. */
8570 if (command
== NULL
)
8573 /* The query prefix. */
8574 strcpy (rs
->buf
, "qRcmd,");
8575 p
= strchr (rs
->buf
, '\0');
8577 if ((strlen (rs
->buf
) + strlen (command
) * 2 + 8/*misc*/)
8578 > get_remote_packet_size ())
8579 error (_("\"monitor\" command ``%s'' is too long."), command
);
8581 /* Encode the actual command. */
8582 bin2hex ((gdb_byte
*) command
, p
, 0);
8584 if (putpkt (rs
->buf
) < 0)
8585 error (_("Communication problem with target."));
8587 /* get/display the response */
8592 /* XXX - see also remote_get_noisy_reply(). */
8593 QUIT
; /* Allow user to bail out with ^C. */
8595 if (getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0) == -1)
8597 /* Timeout. Continue to (try to) read responses.
8598 This is better than stopping with an error, assuming the stub
8599 is still executing the (long) monitor command.
8600 If needed, the user can interrupt gdb using C-c, obtaining
8601 an effect similar to stop on timeout. */
8606 error (_("Target does not support this command."));
8607 if (buf
[0] == 'O' && buf
[1] != 'K')
8609 remote_console_output (buf
+ 1); /* 'O' message from stub. */
8612 if (strcmp (buf
, "OK") == 0)
8614 if (strlen (buf
) == 3 && buf
[0] == 'E'
8615 && isdigit (buf
[1]) && isdigit (buf
[2]))
8617 error (_("Protocol error with Rcmd"));
8619 for (p
= buf
; p
[0] != '\0' && p
[1] != '\0'; p
+= 2)
8621 char c
= (fromhex (p
[0]) << 4) + fromhex (p
[1]);
8623 fputc_unfiltered (c
, outbuf
);
8629 static VEC(mem_region_s
) *
8630 remote_memory_map (struct target_ops
*ops
)
8632 VEC(mem_region_s
) *result
= NULL
;
8633 char *text
= target_read_stralloc (¤t_target
,
8634 TARGET_OBJECT_MEMORY_MAP
, NULL
);
8638 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
8640 result
= parse_memory_map (text
);
8641 do_cleanups (back_to
);
8648 packet_command (char *args
, int from_tty
)
8650 struct remote_state
*rs
= get_remote_state ();
8653 error (_("command can only be used with remote target"));
8656 error (_("remote-packet command requires packet text as argument"));
8658 puts_filtered ("sending: ");
8659 print_packet (args
);
8660 puts_filtered ("\n");
8663 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8664 puts_filtered ("received: ");
8665 print_packet (rs
->buf
);
8666 puts_filtered ("\n");
8670 /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */
8672 static void display_thread_info (struct gdb_ext_thread_info
*info
);
8674 static void threadset_test_cmd (char *cmd
, int tty
);
8676 static void threadalive_test (char *cmd
, int tty
);
8678 static void threadlist_test_cmd (char *cmd
, int tty
);
8680 int get_and_display_threadinfo (threadref
*ref
);
8682 static void threadinfo_test_cmd (char *cmd
, int tty
);
8684 static int thread_display_step (threadref
*ref
, void *context
);
8686 static void threadlist_update_test_cmd (char *cmd
, int tty
);
8688 static void init_remote_threadtests (void);
8690 #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */
8693 threadset_test_cmd (char *cmd
, int tty
)
8695 int sample_thread
= SAMPLE_THREAD
;
8697 printf_filtered (_("Remote threadset test\n"));
8698 set_general_thread (sample_thread
);
8703 threadalive_test (char *cmd
, int tty
)
8705 int sample_thread
= SAMPLE_THREAD
;
8706 int pid
= ptid_get_pid (inferior_ptid
);
8707 ptid_t ptid
= ptid_build (pid
, 0, sample_thread
);
8709 if (remote_thread_alive (ptid
))
8710 printf_filtered ("PASS: Thread alive test\n");
8712 printf_filtered ("FAIL: Thread alive test\n");
8715 void output_threadid (char *title
, threadref
*ref
);
8718 output_threadid (char *title
, threadref
*ref
)
8722 pack_threadid (&hexid
[0], ref
); /* Convert threead id into hex. */
8724 printf_filtered ("%s %s\n", title
, (&hexid
[0]));
8728 threadlist_test_cmd (char *cmd
, int tty
)
8731 threadref nextthread
;
8732 int done
, result_count
;
8733 threadref threadlist
[3];
8735 printf_filtered ("Remote Threadlist test\n");
8736 if (!remote_get_threadlist (startflag
, &nextthread
, 3, &done
,
8737 &result_count
, &threadlist
[0]))
8738 printf_filtered ("FAIL: threadlist test\n");
8741 threadref
*scan
= threadlist
;
8742 threadref
*limit
= scan
+ result_count
;
8744 while (scan
< limit
)
8745 output_threadid (" thread ", scan
++);
8750 display_thread_info (struct gdb_ext_thread_info
*info
)
8752 output_threadid ("Threadid: ", &info
->threadid
);
8753 printf_filtered ("Name: %s\n ", info
->shortname
);
8754 printf_filtered ("State: %s\n", info
->display
);
8755 printf_filtered ("other: %s\n\n", info
->more_display
);
8759 get_and_display_threadinfo (threadref
*ref
)
8763 struct gdb_ext_thread_info threadinfo
;
8765 set
= TAG_THREADID
| TAG_EXISTS
| TAG_THREADNAME
8766 | TAG_MOREDISPLAY
| TAG_DISPLAY
;
8767 if (0 != (result
= remote_get_threadinfo (ref
, set
, &threadinfo
)))
8768 display_thread_info (&threadinfo
);
8773 threadinfo_test_cmd (char *cmd
, int tty
)
8775 int athread
= SAMPLE_THREAD
;
8779 int_to_threadref (&thread
, athread
);
8780 printf_filtered ("Remote Threadinfo test\n");
8781 if (!get_and_display_threadinfo (&thread
))
8782 printf_filtered ("FAIL cannot get thread info\n");
8786 thread_display_step (threadref
*ref
, void *context
)
8788 /* output_threadid(" threadstep ",ref); *//* simple test */
8789 return get_and_display_threadinfo (ref
);
8793 threadlist_update_test_cmd (char *cmd
, int tty
)
8795 printf_filtered ("Remote Threadlist update test\n");
8796 remote_threadlist_iterator (thread_display_step
, 0, CRAZY_MAX_THREADS
);
8800 init_remote_threadtests (void)
8802 add_com ("tlist", class_obscure
, threadlist_test_cmd
,
8803 _("Fetch and print the remote list of "
8804 "thread identifiers, one pkt only"));
8805 add_com ("tinfo", class_obscure
, threadinfo_test_cmd
,
8806 _("Fetch and display info about one thread"));
8807 add_com ("tset", class_obscure
, threadset_test_cmd
,
8808 _("Test setting to a different thread"));
8809 add_com ("tupd", class_obscure
, threadlist_update_test_cmd
,
8810 _("Iterate through updating all remote thread info"));
8811 add_com ("talive", class_obscure
, threadalive_test
,
8812 _(" Remote thread alive test "));
8817 /* Convert a thread ID to a string. Returns the string in a static
8821 remote_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
8823 static char buf
[64];
8824 struct remote_state
*rs
= get_remote_state ();
8826 if (ptid_is_pid (ptid
))
8828 /* Printing an inferior target id. */
8830 /* When multi-process extensions are off, there's no way in the
8831 remote protocol to know the remote process id, if there's any
8832 at all. There's one exception --- when we're connected with
8833 target extended-remote, and we manually attached to a process
8834 with "attach PID". We don't record anywhere a flag that
8835 allows us to distinguish that case from the case of
8836 connecting with extended-remote and the stub already being
8837 attached to a process, and reporting yes to qAttached, hence
8838 no smart special casing here. */
8839 if (!remote_multi_process_p (rs
))
8841 xsnprintf (buf
, sizeof buf
, "Remote target");
8845 return normal_pid_to_str (ptid
);
8849 if (ptid_equal (magic_null_ptid
, ptid
))
8850 xsnprintf (buf
, sizeof buf
, "Thread <main>");
8851 else if (rs
->extended
&& remote_multi_process_p (rs
))
8852 xsnprintf (buf
, sizeof buf
, "Thread %d.%ld",
8853 ptid_get_pid (ptid
), ptid_get_tid (ptid
));
8855 xsnprintf (buf
, sizeof buf
, "Thread %ld",
8856 ptid_get_tid (ptid
));
8861 /* Get the address of the thread local variable in OBJFILE which is
8862 stored at OFFSET within the thread local storage for thread PTID. */
8865 remote_get_thread_local_address (struct target_ops
*ops
,
8866 ptid_t ptid
, CORE_ADDR lm
, CORE_ADDR offset
)
8868 if (remote_protocol_packets
[PACKET_qGetTLSAddr
].support
!= PACKET_DISABLE
)
8870 struct remote_state
*rs
= get_remote_state ();
8872 char *endp
= rs
->buf
+ get_remote_packet_size ();
8873 enum packet_result result
;
8875 strcpy (p
, "qGetTLSAddr:");
8877 p
= write_ptid (p
, endp
, ptid
);
8879 p
+= hexnumstr (p
, offset
);
8881 p
+= hexnumstr (p
, lm
);
8885 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8886 result
= packet_ok (rs
->buf
,
8887 &remote_protocol_packets
[PACKET_qGetTLSAddr
]);
8888 if (result
== PACKET_OK
)
8892 unpack_varlen_hex (rs
->buf
, &result
);
8895 else if (result
== PACKET_UNKNOWN
)
8896 throw_error (TLS_GENERIC_ERROR
,
8897 _("Remote target doesn't support qGetTLSAddr packet"));
8899 throw_error (TLS_GENERIC_ERROR
,
8900 _("Remote target failed to process qGetTLSAddr request"));
8903 throw_error (TLS_GENERIC_ERROR
,
8904 _("TLS not supported or disabled on this target"));
8909 /* Provide thread local base, i.e. Thread Information Block address.
8910 Returns 1 if ptid is found and thread_local_base is non zero. */
8913 remote_get_tib_address (ptid_t ptid
, CORE_ADDR
*addr
)
8915 if (remote_protocol_packets
[PACKET_qGetTIBAddr
].support
!= PACKET_DISABLE
)
8917 struct remote_state
*rs
= get_remote_state ();
8919 char *endp
= rs
->buf
+ get_remote_packet_size ();
8920 enum packet_result result
;
8922 strcpy (p
, "qGetTIBAddr:");
8924 p
= write_ptid (p
, endp
, ptid
);
8928 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
8929 result
= packet_ok (rs
->buf
,
8930 &remote_protocol_packets
[PACKET_qGetTIBAddr
]);
8931 if (result
== PACKET_OK
)
8935 unpack_varlen_hex (rs
->buf
, &result
);
8937 *addr
= (CORE_ADDR
) result
;
8940 else if (result
== PACKET_UNKNOWN
)
8941 error (_("Remote target doesn't support qGetTIBAddr packet"));
8943 error (_("Remote target failed to process qGetTIBAddr request"));
8946 error (_("qGetTIBAddr not supported or disabled on this target"));
8951 /* Support for inferring a target description based on the current
8952 architecture and the size of a 'g' packet. While the 'g' packet
8953 can have any size (since optional registers can be left off the
8954 end), some sizes are easily recognizable given knowledge of the
8955 approximate architecture. */
8957 struct remote_g_packet_guess
8960 const struct target_desc
*tdesc
;
8962 typedef struct remote_g_packet_guess remote_g_packet_guess_s
;
8963 DEF_VEC_O(remote_g_packet_guess_s
);
8965 struct remote_g_packet_data
8967 VEC(remote_g_packet_guess_s
) *guesses
;
8970 static struct gdbarch_data
*remote_g_packet_data_handle
;
8973 remote_g_packet_data_init (struct obstack
*obstack
)
8975 return OBSTACK_ZALLOC (obstack
, struct remote_g_packet_data
);
8979 register_remote_g_packet_guess (struct gdbarch
*gdbarch
, int bytes
,
8980 const struct target_desc
*tdesc
)
8982 struct remote_g_packet_data
*data
8983 = gdbarch_data (gdbarch
, remote_g_packet_data_handle
);
8984 struct remote_g_packet_guess new_guess
, *guess
;
8987 gdb_assert (tdesc
!= NULL
);
8990 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
8992 if (guess
->bytes
== bytes
)
8993 internal_error (__FILE__
, __LINE__
,
8994 _("Duplicate g packet description added for size %d"),
8997 new_guess
.bytes
= bytes
;
8998 new_guess
.tdesc
= tdesc
;
8999 VEC_safe_push (remote_g_packet_guess_s
, data
->guesses
, &new_guess
);
9002 /* Return 1 if remote_read_description would do anything on this target
9003 and architecture, 0 otherwise. */
9006 remote_read_description_p (struct target_ops
*target
)
9008 struct remote_g_packet_data
*data
9009 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
9011 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9017 static const struct target_desc
*
9018 remote_read_description (struct target_ops
*target
)
9020 struct remote_g_packet_data
*data
9021 = gdbarch_data (target_gdbarch
, remote_g_packet_data_handle
);
9023 /* Do not try this during initial connection, when we do not know
9024 whether there is a running but stopped thread. */
9025 if (!target_has_execution
|| ptid_equal (inferior_ptid
, null_ptid
))
9028 if (!VEC_empty (remote_g_packet_guess_s
, data
->guesses
))
9030 struct remote_g_packet_guess
*guess
;
9032 int bytes
= send_g_packet ();
9035 VEC_iterate (remote_g_packet_guess_s
, data
->guesses
, ix
, guess
);
9037 if (guess
->bytes
== bytes
)
9038 return guess
->tdesc
;
9040 /* We discard the g packet. A minor optimization would be to
9041 hold on to it, and fill the register cache once we have selected
9042 an architecture, but it's too tricky to do safely. */
9048 /* Remote file transfer support. This is host-initiated I/O, not
9049 target-initiated; for target-initiated, see remote-fileio.c. */
9051 /* If *LEFT is at least the length of STRING, copy STRING to
9052 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9053 decrease *LEFT. Otherwise raise an error. */
9056 remote_buffer_add_string (char **buffer
, int *left
, char *string
)
9058 int len
= strlen (string
);
9061 error (_("Packet too long for target."));
9063 memcpy (*buffer
, string
, len
);
9067 /* NUL-terminate the buffer as a convenience, if there is
9073 /* If *LEFT is large enough, hex encode LEN bytes from BYTES into
9074 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9075 decrease *LEFT. Otherwise raise an error. */
9078 remote_buffer_add_bytes (char **buffer
, int *left
, const gdb_byte
*bytes
,
9081 if (2 * len
> *left
)
9082 error (_("Packet too long for target."));
9084 bin2hex (bytes
, *buffer
, len
);
9088 /* NUL-terminate the buffer as a convenience, if there is
9094 /* If *LEFT is large enough, convert VALUE to hex and add it to
9095 *BUFFER, update *BUFFER to point to the new end of the buffer, and
9096 decrease *LEFT. Otherwise raise an error. */
9099 remote_buffer_add_int (char **buffer
, int *left
, ULONGEST value
)
9101 int len
= hexnumlen (value
);
9104 error (_("Packet too long for target."));
9106 hexnumstr (*buffer
, value
);
9110 /* NUL-terminate the buffer as a convenience, if there is
9116 /* Parse an I/O result packet from BUFFER. Set RETCODE to the return
9117 value, *REMOTE_ERRNO to the remote error number or zero if none
9118 was included, and *ATTACHMENT to point to the start of the annex
9119 if any. The length of the packet isn't needed here; there may
9120 be NUL bytes in BUFFER, but they will be after *ATTACHMENT.
9122 Return 0 if the packet could be parsed, -1 if it could not. If
9123 -1 is returned, the other variables may not be initialized. */
9126 remote_hostio_parse_result (char *buffer
, int *retcode
,
9127 int *remote_errno
, char **attachment
)
9134 if (buffer
[0] != 'F')
9138 *retcode
= strtol (&buffer
[1], &p
, 16);
9139 if (errno
!= 0 || p
== &buffer
[1])
9142 /* Check for ",errno". */
9146 *remote_errno
= strtol (p
+ 1, &p2
, 16);
9147 if (errno
!= 0 || p
+ 1 == p2
)
9152 /* Check for ";attachment". If there is no attachment, the
9153 packet should end here. */
9156 *attachment
= p
+ 1;
9159 else if (*p
== '\0')
9165 /* Send a prepared I/O packet to the target and read its response.
9166 The prepared packet is in the global RS->BUF before this function
9167 is called, and the answer is there when we return.
9169 COMMAND_BYTES is the length of the request to send, which may include
9170 binary data. WHICH_PACKET is the packet configuration to check
9171 before attempting a packet. If an error occurs, *REMOTE_ERRNO
9172 is set to the error number and -1 is returned. Otherwise the value
9173 returned by the function is returned.
9175 ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an
9176 attachment is expected; an error will be reported if there's a
9177 mismatch. If one is found, *ATTACHMENT will be set to point into
9178 the packet buffer and *ATTACHMENT_LEN will be set to the
9179 attachment's length. */
9182 remote_hostio_send_command (int command_bytes
, int which_packet
,
9183 int *remote_errno
, char **attachment
,
9184 int *attachment_len
)
9186 struct remote_state
*rs
= get_remote_state ();
9187 int ret
, bytes_read
;
9188 char *attachment_tmp
;
9191 || remote_protocol_packets
[which_packet
].support
== PACKET_DISABLE
)
9193 *remote_errno
= FILEIO_ENOSYS
;
9197 putpkt_binary (rs
->buf
, command_bytes
);
9198 bytes_read
= getpkt_sane (&rs
->buf
, &rs
->buf_size
, 0);
9200 /* If it timed out, something is wrong. Don't try to parse the
9204 *remote_errno
= FILEIO_EINVAL
;
9208 switch (packet_ok (rs
->buf
, &remote_protocol_packets
[which_packet
]))
9211 *remote_errno
= FILEIO_EINVAL
;
9213 case PACKET_UNKNOWN
:
9214 *remote_errno
= FILEIO_ENOSYS
;
9220 if (remote_hostio_parse_result (rs
->buf
, &ret
, remote_errno
,
9223 *remote_errno
= FILEIO_EINVAL
;
9227 /* Make sure we saw an attachment if and only if we expected one. */
9228 if ((attachment_tmp
== NULL
&& attachment
!= NULL
)
9229 || (attachment_tmp
!= NULL
&& attachment
== NULL
))
9231 *remote_errno
= FILEIO_EINVAL
;
9235 /* If an attachment was found, it must point into the packet buffer;
9236 work out how many bytes there were. */
9237 if (attachment_tmp
!= NULL
)
9239 *attachment
= attachment_tmp
;
9240 *attachment_len
= bytes_read
- (*attachment
- rs
->buf
);
9246 /* Open FILENAME on the remote target, using FLAGS and MODE. Return a
9247 remote file descriptor, or -1 if an error occurs (and set
9251 remote_hostio_open (const char *filename
, int flags
, int mode
,
9254 struct remote_state
*rs
= get_remote_state ();
9256 int left
= get_remote_packet_size () - 1;
9258 remote_buffer_add_string (&p
, &left
, "vFile:open:");
9260 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9262 remote_buffer_add_string (&p
, &left
, ",");
9264 remote_buffer_add_int (&p
, &left
, flags
);
9265 remote_buffer_add_string (&p
, &left
, ",");
9267 remote_buffer_add_int (&p
, &left
, mode
);
9269 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_open
,
9270 remote_errno
, NULL
, NULL
);
9273 /* Write up to LEN bytes from WRITE_BUF to FD on the remote target.
9274 Return the number of bytes written, or -1 if an error occurs (and
9275 set *REMOTE_ERRNO). */
9278 remote_hostio_pwrite (int fd
, const gdb_byte
*write_buf
, int len
,
9279 ULONGEST offset
, int *remote_errno
)
9281 struct remote_state
*rs
= get_remote_state ();
9283 int left
= get_remote_packet_size ();
9286 remote_buffer_add_string (&p
, &left
, "vFile:pwrite:");
9288 remote_buffer_add_int (&p
, &left
, fd
);
9289 remote_buffer_add_string (&p
, &left
, ",");
9291 remote_buffer_add_int (&p
, &left
, offset
);
9292 remote_buffer_add_string (&p
, &left
, ",");
9294 p
+= remote_escape_output (write_buf
, len
, p
, &out_len
,
9295 get_remote_packet_size () - (p
- rs
->buf
));
9297 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pwrite
,
9298 remote_errno
, NULL
, NULL
);
9301 /* Read up to LEN bytes FD on the remote target into READ_BUF
9302 Return the number of bytes read, or -1 if an error occurs (and
9303 set *REMOTE_ERRNO). */
9306 remote_hostio_pread (int fd
, gdb_byte
*read_buf
, int len
,
9307 ULONGEST offset
, int *remote_errno
)
9309 struct remote_state
*rs
= get_remote_state ();
9312 int left
= get_remote_packet_size ();
9313 int ret
, attachment_len
;
9316 remote_buffer_add_string (&p
, &left
, "vFile:pread:");
9318 remote_buffer_add_int (&p
, &left
, fd
);
9319 remote_buffer_add_string (&p
, &left
, ",");
9321 remote_buffer_add_int (&p
, &left
, len
);
9322 remote_buffer_add_string (&p
, &left
, ",");
9324 remote_buffer_add_int (&p
, &left
, offset
);
9326 ret
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_pread
,
9327 remote_errno
, &attachment
,
9333 read_len
= remote_unescape_input (attachment
, attachment_len
,
9335 if (read_len
!= ret
)
9336 error (_("Read returned %d, but %d bytes."), ret
, (int) read_len
);
9341 /* Close FD on the remote target. Return 0, or -1 if an error occurs
9342 (and set *REMOTE_ERRNO). */
9345 remote_hostio_close (int fd
, int *remote_errno
)
9347 struct remote_state
*rs
= get_remote_state ();
9349 int left
= get_remote_packet_size () - 1;
9351 remote_buffer_add_string (&p
, &left
, "vFile:close:");
9353 remote_buffer_add_int (&p
, &left
, fd
);
9355 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_close
,
9356 remote_errno
, NULL
, NULL
);
9359 /* Unlink FILENAME on the remote target. Return 0, or -1 if an error
9360 occurs (and set *REMOTE_ERRNO). */
9363 remote_hostio_unlink (const char *filename
, int *remote_errno
)
9365 struct remote_state
*rs
= get_remote_state ();
9367 int left
= get_remote_packet_size () - 1;
9369 remote_buffer_add_string (&p
, &left
, "vFile:unlink:");
9371 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9374 return remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_unlink
,
9375 remote_errno
, NULL
, NULL
);
9378 /* Read value of symbolic link FILENAME on the remote target. Return
9379 a null-terminated string allocated via xmalloc, or NULL if an error
9380 occurs (and set *REMOTE_ERRNO). */
9383 remote_hostio_readlink (const char *filename
, int *remote_errno
)
9385 struct remote_state
*rs
= get_remote_state ();
9388 int left
= get_remote_packet_size ();
9389 int len
, attachment_len
;
9393 remote_buffer_add_string (&p
, &left
, "vFile:readlink:");
9395 remote_buffer_add_bytes (&p
, &left
, (const gdb_byte
*) filename
,
9398 len
= remote_hostio_send_command (p
- rs
->buf
, PACKET_vFile_readlink
,
9399 remote_errno
, &attachment
,
9405 ret
= xmalloc (len
+ 1);
9407 read_len
= remote_unescape_input (attachment
, attachment_len
,
9409 if (read_len
!= len
)
9410 error (_("Readlink returned %d, but %d bytes."), len
, read_len
);
9417 remote_fileio_errno_to_host (int errnum
)
9441 case FILEIO_ENOTDIR
:
9461 case FILEIO_ENAMETOOLONG
:
9462 return ENAMETOOLONG
;
9468 remote_hostio_error (int errnum
)
9470 int host_error
= remote_fileio_errno_to_host (errnum
);
9472 if (host_error
== -1)
9473 error (_("Unknown remote I/O error %d"), errnum
);
9475 error (_("Remote I/O error: %s"), safe_strerror (host_error
));
9479 remote_hostio_close_cleanup (void *opaque
)
9481 int fd
= *(int *) opaque
;
9484 remote_hostio_close (fd
, &remote_errno
);
9489 remote_bfd_iovec_open (struct bfd
*abfd
, void *open_closure
)
9491 const char *filename
= bfd_get_filename (abfd
);
9492 int fd
, remote_errno
;
9495 gdb_assert (remote_filename_p (filename
));
9497 fd
= remote_hostio_open (filename
+ 7, FILEIO_O_RDONLY
, 0, &remote_errno
);
9500 errno
= remote_fileio_errno_to_host (remote_errno
);
9501 bfd_set_error (bfd_error_system_call
);
9505 stream
= xmalloc (sizeof (int));
9511 remote_bfd_iovec_close (struct bfd
*abfd
, void *stream
)
9513 int fd
= *(int *)stream
;
9518 /* Ignore errors on close; these may happen if the remote
9519 connection was already torn down. */
9520 remote_hostio_close (fd
, &remote_errno
);
9526 remote_bfd_iovec_pread (struct bfd
*abfd
, void *stream
, void *buf
,
9527 file_ptr nbytes
, file_ptr offset
)
9529 int fd
= *(int *)stream
;
9531 file_ptr pos
, bytes
;
9534 while (nbytes
> pos
)
9536 bytes
= remote_hostio_pread (fd
, (char *)buf
+ pos
, nbytes
- pos
,
9537 offset
+ pos
, &remote_errno
);
9539 /* Success, but no bytes, means end-of-file. */
9543 errno
= remote_fileio_errno_to_host (remote_errno
);
9544 bfd_set_error (bfd_error_system_call
);
9555 remote_bfd_iovec_stat (struct bfd
*abfd
, void *stream
, struct stat
*sb
)
9557 /* FIXME: We should probably implement remote_hostio_stat. */
9558 sb
->st_size
= INT_MAX
;
9563 remote_filename_p (const char *filename
)
9565 return strncmp (filename
, "remote:", 7) == 0;
9569 remote_bfd_open (const char *remote_file
, const char *target
)
9571 return bfd_openr_iovec (remote_file
, target
,
9572 remote_bfd_iovec_open
, NULL
,
9573 remote_bfd_iovec_pread
,
9574 remote_bfd_iovec_close
,
9575 remote_bfd_iovec_stat
);
9579 remote_file_put (const char *local_file
, const char *remote_file
, int from_tty
)
9581 struct cleanup
*back_to
, *close_cleanup
;
9582 int retcode
, fd
, remote_errno
, bytes
, io_size
;
9585 int bytes_in_buffer
;
9590 error (_("command can only be used with remote target"));
9592 file
= fopen (local_file
, "rb");
9594 perror_with_name (local_file
);
9595 back_to
= make_cleanup_fclose (file
);
9597 fd
= remote_hostio_open (remote_file
, (FILEIO_O_WRONLY
| FILEIO_O_CREAT
9599 0700, &remote_errno
);
9601 remote_hostio_error (remote_errno
);
9603 /* Send up to this many bytes at once. They won't all fit in the
9604 remote packet limit, so we'll transfer slightly fewer. */
9605 io_size
= get_remote_packet_size ();
9606 buffer
= xmalloc (io_size
);
9607 make_cleanup (xfree
, buffer
);
9609 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9611 bytes_in_buffer
= 0;
9614 while (bytes_in_buffer
|| !saw_eof
)
9618 bytes
= fread (buffer
+ bytes_in_buffer
, 1,
9619 io_size
- bytes_in_buffer
,
9624 error (_("Error reading %s."), local_file
);
9627 /* EOF. Unless there is something still in the
9628 buffer from the last iteration, we are done. */
9630 if (bytes_in_buffer
== 0)
9638 bytes
+= bytes_in_buffer
;
9639 bytes_in_buffer
= 0;
9641 retcode
= remote_hostio_pwrite (fd
, buffer
, bytes
,
9642 offset
, &remote_errno
);
9645 remote_hostio_error (remote_errno
);
9646 else if (retcode
== 0)
9647 error (_("Remote write of %d bytes returned 0!"), bytes
);
9648 else if (retcode
< bytes
)
9650 /* Short write. Save the rest of the read data for the next
9652 bytes_in_buffer
= bytes
- retcode
;
9653 memmove (buffer
, buffer
+ retcode
, bytes_in_buffer
);
9659 discard_cleanups (close_cleanup
);
9660 if (remote_hostio_close (fd
, &remote_errno
))
9661 remote_hostio_error (remote_errno
);
9664 printf_filtered (_("Successfully sent file \"%s\".\n"), local_file
);
9665 do_cleanups (back_to
);
9669 remote_file_get (const char *remote_file
, const char *local_file
, int from_tty
)
9671 struct cleanup
*back_to
, *close_cleanup
;
9672 int fd
, remote_errno
, bytes
, io_size
;
9678 error (_("command can only be used with remote target"));
9680 fd
= remote_hostio_open (remote_file
, FILEIO_O_RDONLY
, 0, &remote_errno
);
9682 remote_hostio_error (remote_errno
);
9684 file
= fopen (local_file
, "wb");
9686 perror_with_name (local_file
);
9687 back_to
= make_cleanup_fclose (file
);
9689 /* Send up to this many bytes at once. They won't all fit in the
9690 remote packet limit, so we'll transfer slightly fewer. */
9691 io_size
= get_remote_packet_size ();
9692 buffer
= xmalloc (io_size
);
9693 make_cleanup (xfree
, buffer
);
9695 close_cleanup
= make_cleanup (remote_hostio_close_cleanup
, &fd
);
9700 bytes
= remote_hostio_pread (fd
, buffer
, io_size
, offset
, &remote_errno
);
9702 /* Success, but no bytes, means end-of-file. */
9705 remote_hostio_error (remote_errno
);
9709 bytes
= fwrite (buffer
, 1, bytes
, file
);
9711 perror_with_name (local_file
);
9714 discard_cleanups (close_cleanup
);
9715 if (remote_hostio_close (fd
, &remote_errno
))
9716 remote_hostio_error (remote_errno
);
9719 printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file
);
9720 do_cleanups (back_to
);
9724 remote_file_delete (const char *remote_file
, int from_tty
)
9726 int retcode
, remote_errno
;
9729 error (_("command can only be used with remote target"));
9731 retcode
= remote_hostio_unlink (remote_file
, &remote_errno
);
9733 remote_hostio_error (remote_errno
);
9736 printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file
);
9740 remote_put_command (char *args
, int from_tty
)
9742 struct cleanup
*back_to
;
9746 error_no_arg (_("file to put"));
9748 argv
= gdb_buildargv (args
);
9749 back_to
= make_cleanup_freeargv (argv
);
9750 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9751 error (_("Invalid parameters to remote put"));
9753 remote_file_put (argv
[0], argv
[1], from_tty
);
9755 do_cleanups (back_to
);
9759 remote_get_command (char *args
, int from_tty
)
9761 struct cleanup
*back_to
;
9765 error_no_arg (_("file to get"));
9767 argv
= gdb_buildargv (args
);
9768 back_to
= make_cleanup_freeargv (argv
);
9769 if (argv
[0] == NULL
|| argv
[1] == NULL
|| argv
[2] != NULL
)
9770 error (_("Invalid parameters to remote get"));
9772 remote_file_get (argv
[0], argv
[1], from_tty
);
9774 do_cleanups (back_to
);
9778 remote_delete_command (char *args
, int from_tty
)
9780 struct cleanup
*back_to
;
9784 error_no_arg (_("file to delete"));
9786 argv
= gdb_buildargv (args
);
9787 back_to
= make_cleanup_freeargv (argv
);
9788 if (argv
[0] == NULL
|| argv
[1] != NULL
)
9789 error (_("Invalid parameters to remote delete"));
9791 remote_file_delete (argv
[0], from_tty
);
9793 do_cleanups (back_to
);
9797 remote_command (char *args
, int from_tty
)
9799 help_list (remote_cmdlist
, "remote ", -1, gdb_stdout
);
9803 remote_can_execute_reverse (void)
9805 if (remote_protocol_packets
[PACKET_bs
].support
== PACKET_ENABLE
9806 || remote_protocol_packets
[PACKET_bc
].support
== PACKET_ENABLE
)
9813 remote_supports_non_stop (void)
9819 remote_supports_disable_randomization (void)
9821 /* Only supported in extended mode. */
9826 remote_supports_multi_process (void)
9828 struct remote_state
*rs
= get_remote_state ();
9830 /* Only extended-remote handles being attached to multiple
9831 processes, even though plain remote can use the multi-process
9832 thread id extensions, so that GDB knows the target process's
9834 return rs
->extended
&& remote_multi_process_p (rs
);
9838 remote_supports_cond_tracepoints (void)
9840 struct remote_state
*rs
= get_remote_state ();
9842 return rs
->cond_tracepoints
;
9846 remote_supports_fast_tracepoints (void)
9848 struct remote_state
*rs
= get_remote_state ();
9850 return rs
->fast_tracepoints
;
9854 remote_supports_static_tracepoints (void)
9856 struct remote_state
*rs
= get_remote_state ();
9858 return rs
->static_tracepoints
;
9862 remote_supports_install_in_trace (void)
9864 struct remote_state
*rs
= get_remote_state ();
9866 return rs
->install_in_trace
;
9870 remote_supports_enable_disable_tracepoint (void)
9872 struct remote_state
*rs
= get_remote_state ();
9874 return rs
->enable_disable_tracepoints
;
9878 remote_supports_string_tracing (void)
9880 struct remote_state
*rs
= get_remote_state ();
9882 return rs
->string_tracing
;
9886 remote_trace_init (void)
9889 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9890 if (strcmp (target_buf
, "OK") != 0)
9891 error (_("Target does not support this command."));
9894 static void free_actions_list (char **actions_list
);
9895 static void free_actions_list_cleanup_wrapper (void *);
9897 free_actions_list_cleanup_wrapper (void *al
)
9899 free_actions_list (al
);
9903 free_actions_list (char **actions_list
)
9907 if (actions_list
== 0)
9910 for (ndx
= 0; actions_list
[ndx
]; ndx
++)
9911 xfree (actions_list
[ndx
]);
9913 xfree (actions_list
);
9916 /* Recursive routine to walk through command list including loops, and
9917 download packets for each command. */
9920 remote_download_command_source (int num
, ULONGEST addr
,
9921 struct command_line
*cmds
)
9923 struct remote_state
*rs
= get_remote_state ();
9924 struct command_line
*cmd
;
9926 for (cmd
= cmds
; cmd
; cmd
= cmd
->next
)
9928 QUIT
; /* Allow user to bail out with ^C. */
9929 strcpy (rs
->buf
, "QTDPsrc:");
9930 encode_source_string (num
, addr
, "cmd", cmd
->line
,
9931 rs
->buf
+ strlen (rs
->buf
),
9932 rs
->buf_size
- strlen (rs
->buf
));
9934 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9935 if (strcmp (target_buf
, "OK"))
9936 warning (_("Target does not support source download."));
9938 if (cmd
->control_type
== while_control
9939 || cmd
->control_type
== while_stepping_control
)
9941 remote_download_command_source (num
, addr
, *cmd
->body_list
);
9943 QUIT
; /* Allow user to bail out with ^C. */
9944 strcpy (rs
->buf
, "QTDPsrc:");
9945 encode_source_string (num
, addr
, "cmd", "end",
9946 rs
->buf
+ strlen (rs
->buf
),
9947 rs
->buf_size
- strlen (rs
->buf
));
9949 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
9950 if (strcmp (target_buf
, "OK"))
9951 warning (_("Target does not support source download."));
9957 remote_download_tracepoint (struct bp_location
*loc
)
9964 char **stepping_actions
;
9966 struct cleanup
*old_chain
= NULL
;
9967 struct agent_expr
*aexpr
;
9968 struct cleanup
*aexpr_chain
= NULL
;
9970 struct breakpoint
*b
= loc
->owner
;
9971 struct tracepoint
*t
= (struct tracepoint
*) b
;
9973 encode_actions (loc
->owner
, loc
, &tdp_actions
, &stepping_actions
);
9974 old_chain
= make_cleanup (free_actions_list_cleanup_wrapper
,
9976 (void) make_cleanup (free_actions_list_cleanup_wrapper
,
9979 tpaddr
= loc
->address
;
9980 sprintf_vma (addrbuf
, tpaddr
);
9981 sprintf (buf
, "QTDP:%x:%s:%c:%lx:%x", b
->number
,
9982 addrbuf
, /* address */
9983 (b
->enable_state
== bp_enabled
? 'E' : 'D'),
9984 t
->step_count
, t
->pass_count
);
9985 /* Fast tracepoints are mostly handled by the target, but we can
9986 tell the target how big of an instruction block should be moved
9988 if (b
->type
== bp_fast_tracepoint
)
9990 /* Only test for support at download time; we may not know
9991 target capabilities at definition time. */
9992 if (remote_supports_fast_tracepoints ())
9996 if (gdbarch_fast_tracepoint_valid_at (target_gdbarch
,
9997 tpaddr
, &isize
, NULL
))
9998 sprintf (buf
+ strlen (buf
), ":F%x", isize
);
10000 /* If it passed validation at definition but fails now,
10001 something is very wrong. */
10002 internal_error (__FILE__
, __LINE__
,
10003 _("Fast tracepoint not "
10004 "valid during download"));
10007 /* Fast tracepoints are functionally identical to regular
10008 tracepoints, so don't take lack of support as a reason to
10009 give up on the trace run. */
10010 warning (_("Target does not support fast tracepoints, "
10011 "downloading %d as regular tracepoint"), b
->number
);
10013 else if (b
->type
== bp_static_tracepoint
)
10015 /* Only test for support at download time; we may not know
10016 target capabilities at definition time. */
10017 if (remote_supports_static_tracepoints ())
10019 struct static_tracepoint_marker marker
;
10021 if (target_static_tracepoint_marker_at (tpaddr
, &marker
))
10022 strcat (buf
, ":S");
10024 error (_("Static tracepoint not valid during download"));
10027 /* Fast tracepoints are functionally identical to regular
10028 tracepoints, so don't take lack of support as a reason
10029 to give up on the trace run. */
10030 error (_("Target does not support static tracepoints"));
10032 /* If the tracepoint has a conditional, make it into an agent
10033 expression and append to the definition. */
10036 /* Only test support at download time, we may not know target
10037 capabilities at definition time. */
10038 if (remote_supports_cond_tracepoints ())
10040 aexpr
= gen_eval_for_expr (tpaddr
, loc
->cond
);
10041 aexpr_chain
= make_cleanup_free_agent_expr (aexpr
);
10042 sprintf (buf
+ strlen (buf
), ":X%x,", aexpr
->len
);
10043 pkt
= buf
+ strlen (buf
);
10044 for (ndx
= 0; ndx
< aexpr
->len
; ++ndx
)
10045 pkt
= pack_hex_byte (pkt
, aexpr
->buf
[ndx
]);
10047 do_cleanups (aexpr_chain
);
10050 warning (_("Target does not support conditional tracepoints, "
10051 "ignoring tp %d cond"), b
->number
);
10054 if (b
->commands
|| *default_collect
)
10057 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10058 if (strcmp (target_buf
, "OK"))
10059 error (_("Target does not support tracepoints."));
10061 /* do_single_steps (t); */
10064 for (ndx
= 0; tdp_actions
[ndx
]; ndx
++)
10066 QUIT
; /* Allow user to bail out with ^C. */
10067 sprintf (buf
, "QTDP:-%x:%s:%s%c",
10068 b
->number
, addrbuf
, /* address */
10070 ((tdp_actions
[ndx
+ 1] || stepping_actions
)
10073 remote_get_noisy_reply (&target_buf
,
10075 if (strcmp (target_buf
, "OK"))
10076 error (_("Error on target while setting tracepoints."));
10079 if (stepping_actions
)
10081 for (ndx
= 0; stepping_actions
[ndx
]; ndx
++)
10083 QUIT
; /* Allow user to bail out with ^C. */
10084 sprintf (buf
, "QTDP:-%x:%s:%s%s%s",
10085 b
->number
, addrbuf
, /* address */
10086 ((ndx
== 0) ? "S" : ""),
10087 stepping_actions
[ndx
],
10088 (stepping_actions
[ndx
+ 1] ? "-" : ""));
10090 remote_get_noisy_reply (&target_buf
,
10092 if (strcmp (target_buf
, "OK"))
10093 error (_("Error on target while setting tracepoints."));
10097 if (remote_protocol_packets
[PACKET_TracepointSource
].support
10100 if (b
->addr_string
)
10102 strcpy (buf
, "QTDPsrc:");
10103 encode_source_string (b
->number
, loc
->address
,
10104 "at", b
->addr_string
, buf
+ strlen (buf
),
10105 2048 - strlen (buf
));
10108 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10109 if (strcmp (target_buf
, "OK"))
10110 warning (_("Target does not support source download."));
10112 if (b
->cond_string
)
10114 strcpy (buf
, "QTDPsrc:");
10115 encode_source_string (b
->number
, loc
->address
,
10116 "cond", b
->cond_string
, buf
+ strlen (buf
),
10117 2048 - strlen (buf
));
10119 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10120 if (strcmp (target_buf
, "OK"))
10121 warning (_("Target does not support source download."));
10123 remote_download_command_source (b
->number
, loc
->address
,
10124 breakpoint_commands (b
));
10127 do_cleanups (old_chain
);
10131 remote_can_download_tracepoint (void)
10133 struct trace_status
*ts
= current_trace_status ();
10134 int status
= remote_get_trace_status (ts
);
10136 if (status
== -1 || !ts
->running_known
|| !ts
->running
)
10139 /* If we are in a tracing experiment, but remote stub doesn't support
10140 installing tracepoint in trace, we have to return. */
10141 if (!remote_supports_install_in_trace ())
10149 remote_download_trace_state_variable (struct trace_state_variable
*tsv
)
10151 struct remote_state
*rs
= get_remote_state ();
10154 sprintf (rs
->buf
, "QTDV:%x:%s:%x:",
10155 tsv
->number
, phex ((ULONGEST
) tsv
->initial_value
, 8), tsv
->builtin
);
10156 p
= rs
->buf
+ strlen (rs
->buf
);
10157 if ((p
- rs
->buf
) + strlen (tsv
->name
) * 2 >= get_remote_packet_size ())
10158 error (_("Trace state variable name too long for tsv definition packet"));
10159 p
+= 2 * bin2hex ((gdb_byte
*) (tsv
->name
), p
, 0);
10162 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10163 if (*target_buf
== '\0')
10164 error (_("Target does not support this command."));
10165 if (strcmp (target_buf
, "OK") != 0)
10166 error (_("Error on target while downloading trace state variable."));
10170 remote_enable_tracepoint (struct bp_location
*location
)
10172 struct remote_state
*rs
= get_remote_state ();
10175 sprintf_vma (addr_buf
, location
->address
);
10176 sprintf (rs
->buf
, "QTEnable:%x:%s", location
->owner
->number
, addr_buf
);
10178 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10179 if (*rs
->buf
== '\0')
10180 error (_("Target does not support enabling tracepoints while a trace run is ongoing."));
10181 if (strcmp (rs
->buf
, "OK") != 0)
10182 error (_("Error on target while enabling tracepoint."));
10186 remote_disable_tracepoint (struct bp_location
*location
)
10188 struct remote_state
*rs
= get_remote_state ();
10191 sprintf_vma (addr_buf
, location
->address
);
10192 sprintf (rs
->buf
, "QTDisable:%x:%s", location
->owner
->number
, addr_buf
);
10194 remote_get_noisy_reply (&rs
->buf
, &rs
->buf_size
);
10195 if (*rs
->buf
== '\0')
10196 error (_("Target does not support disabling tracepoints while a trace run is ongoing."));
10197 if (strcmp (rs
->buf
, "OK") != 0)
10198 error (_("Error on target while disabling tracepoint."));
10202 remote_trace_set_readonly_regions (void)
10205 bfd_size_type size
;
10211 return; /* No information to give. */
10213 strcpy (target_buf
, "QTro");
10214 for (s
= exec_bfd
->sections
; s
; s
= s
->next
)
10216 char tmp1
[40], tmp2
[40];
10219 if ((s
->flags
& SEC_LOAD
) == 0 ||
10220 /* (s->flags & SEC_CODE) == 0 || */
10221 (s
->flags
& SEC_READONLY
) == 0)
10225 vma
= bfd_get_section_vma (,s
);
10226 size
= bfd_get_section_size (s
);
10227 sprintf_vma (tmp1
, vma
);
10228 sprintf_vma (tmp2
, vma
+ size
);
10229 sec_length
= 1 + strlen (tmp1
) + 1 + strlen (tmp2
);
10230 if (offset
+ sec_length
+ 1 > target_buf_size
)
10232 if (remote_protocol_packets
[PACKET_qXfer_traceframe_info
].support
10235 Too many sections for read-only sections definition packet."));
10238 sprintf (target_buf
+ offset
, ":%s,%s", tmp1
, tmp2
);
10239 offset
+= sec_length
;
10243 putpkt (target_buf
);
10244 getpkt (&target_buf
, &target_buf_size
, 0);
10249 remote_trace_start (void)
10251 putpkt ("QTStart");
10252 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10253 if (*target_buf
== '\0')
10254 error (_("Target does not support this command."));
10255 if (strcmp (target_buf
, "OK") != 0)
10256 error (_("Bogus reply from target: %s"), target_buf
);
10260 remote_get_trace_status (struct trace_status
*ts
)
10262 /* Initialize it just to avoid a GCC false warning. */
10264 /* FIXME we need to get register block size some other way. */
10265 extern int trace_regblock_size
;
10266 volatile struct gdb_exception ex
;
10268 trace_regblock_size
= get_remote_arch_state ()->sizeof_g_packet
;
10270 putpkt ("qTStatus");
10272 TRY_CATCH (ex
, RETURN_MASK_ERROR
)
10274 p
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10278 exception_fprintf (gdb_stderr
, ex
, "qTStatus: ");
10282 /* If the remote target doesn't do tracing, flag it. */
10286 /* We're working with a live target. */
10289 /* Set some defaults. */
10290 ts
->running_known
= 0;
10291 ts
->stop_reason
= trace_stop_reason_unknown
;
10292 ts
->traceframe_count
= -1;
10293 ts
->buffer_free
= 0;
10296 error (_("Bogus trace status reply from target: %s"), target_buf
);
10298 parse_trace_status (p
, ts
);
10300 return ts
->running
;
10304 remote_get_tracepoint_status (struct breakpoint
*bp
,
10305 struct uploaded_tp
*utp
)
10307 struct remote_state
*rs
= get_remote_state ();
10309 struct bp_location
*loc
;
10310 struct tracepoint
*tp
= (struct tracepoint
*) bp
;
10314 tp
->base
.hit_count
= 0;
10315 tp
->traceframe_usage
= 0;
10316 for (loc
= tp
->base
.loc
; loc
; loc
= loc
->next
)
10318 /* If the tracepoint was never downloaded, don't go asking for
10320 if (tp
->number_on_target
== 0)
10322 sprintf (rs
->buf
, "qTP:%x:%s", tp
->number_on_target
,
10323 phex_nz (loc
->address
, 0));
10325 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10326 if (reply
&& *reply
)
10329 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10335 utp
->hit_count
= 0;
10336 utp
->traceframe_usage
= 0;
10337 sprintf (rs
->buf
, "qTP:%x:%s", utp
->number
, phex_nz (utp
->addr
, 0));
10339 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10340 if (reply
&& *reply
)
10343 parse_tracepoint_status (reply
+ 1, bp
, utp
);
10349 remote_trace_stop (void)
10352 remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10353 if (*target_buf
== '\0')
10354 error (_("Target does not support this command."));
10355 if (strcmp (target_buf
, "OK") != 0)
10356 error (_("Bogus reply from target: %s"), target_buf
);
10360 remote_trace_find (enum trace_find_type type
, int num
,
10361 ULONGEST addr1
, ULONGEST addr2
,
10364 struct remote_state
*rs
= get_remote_state ();
10366 int target_frameno
= -1, target_tracept
= -1;
10368 /* Lookups other than by absolute frame number depend on the current
10369 trace selected, so make sure it is correct on the remote end
10371 if (type
!= tfind_number
)
10372 set_remote_traceframe ();
10375 strcpy (p
, "QTFrame:");
10376 p
= strchr (p
, '\0');
10380 sprintf (p
, "%x", num
);
10383 sprintf (p
, "pc:%s", phex_nz (addr1
, 0));
10386 sprintf (p
, "tdp:%x", num
);
10389 sprintf (p
, "range:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
10391 case tfind_outside
:
10392 sprintf (p
, "outside:%s:%s", phex_nz (addr1
, 0), phex_nz (addr2
, 0));
10395 error (_("Unknown trace find type %d"), type
);
10399 reply
= remote_get_noisy_reply (&(rs
->buf
), &sizeof_pkt
);
10400 if (*reply
== '\0')
10401 error (_("Target does not support this command."));
10403 while (reply
&& *reply
)
10408 target_frameno
= (int) strtol (p
, &reply
, 16);
10410 error (_("Unable to parse trace frame number"));
10411 /* Don't update our remote traceframe number cache on failure
10412 to select a remote traceframe. */
10413 if (target_frameno
== -1)
10418 target_tracept
= (int) strtol (p
, &reply
, 16);
10420 error (_("Unable to parse tracepoint number"));
10422 case 'O': /* "OK"? */
10423 if (reply
[1] == 'K' && reply
[2] == '\0')
10426 error (_("Bogus reply from target: %s"), reply
);
10429 error (_("Bogus reply from target: %s"), reply
);
10432 *tpp
= target_tracept
;
10434 remote_traceframe_number
= target_frameno
;
10435 return target_frameno
;
10439 remote_get_trace_state_variable_value (int tsvnum
, LONGEST
*val
)
10441 struct remote_state
*rs
= get_remote_state ();
10445 set_remote_traceframe ();
10447 sprintf (rs
->buf
, "qTV:%x", tsvnum
);
10449 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10450 if (reply
&& *reply
)
10454 unpack_varlen_hex (reply
+ 1, &uval
);
10455 *val
= (LONGEST
) uval
;
10463 remote_save_trace_data (const char *filename
)
10465 struct remote_state
*rs
= get_remote_state ();
10469 strcpy (p
, "QTSave:");
10471 if ((p
- rs
->buf
) + strlen (filename
) * 2 >= get_remote_packet_size ())
10472 error (_("Remote file name too long for trace save packet"));
10473 p
+= 2 * bin2hex ((gdb_byte
*) filename
, p
, 0);
10476 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10477 if (*reply
== '\0')
10478 error (_("Target does not support this command."));
10479 if (strcmp (reply
, "OK") != 0)
10480 error (_("Bogus reply from target: %s"), reply
);
10484 /* This is basically a memory transfer, but needs to be its own packet
10485 because we don't know how the target actually organizes its trace
10486 memory, plus we want to be able to ask for as much as possible, but
10487 not be unhappy if we don't get as much as we ask for. */
10490 remote_get_raw_trace_data (gdb_byte
*buf
, ULONGEST offset
, LONGEST len
)
10492 struct remote_state
*rs
= get_remote_state ();
10498 strcpy (p
, "qTBuffer:");
10500 p
+= hexnumstr (p
, offset
);
10502 p
+= hexnumstr (p
, len
);
10506 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10507 if (reply
&& *reply
)
10509 /* 'l' by itself means we're at the end of the buffer and
10510 there is nothing more to get. */
10514 /* Convert the reply into binary. Limit the number of bytes to
10515 convert according to our passed-in buffer size, rather than
10516 what was returned in the packet; if the target is
10517 unexpectedly generous and gives us a bigger reply than we
10518 asked for, we don't want to crash. */
10519 rslt
= hex2bin (target_buf
, buf
, len
);
10523 /* Something went wrong, flag as an error. */
10528 remote_set_disconnected_tracing (int val
)
10530 struct remote_state
*rs
= get_remote_state ();
10532 if (rs
->disconnected_tracing
)
10536 sprintf (rs
->buf
, "QTDisconnected:%x", val
);
10538 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10539 if (*reply
== '\0')
10540 error (_("Target does not support this command."));
10541 if (strcmp (reply
, "OK") != 0)
10542 error (_("Bogus reply from target: %s"), reply
);
10545 warning (_("Target does not support disconnected tracing."));
10549 remote_core_of_thread (struct target_ops
*ops
, ptid_t ptid
)
10551 struct thread_info
*info
= find_thread_ptid (ptid
);
10553 if (info
&& info
->private)
10554 return info
->private->core
;
10559 remote_set_circular_trace_buffer (int val
)
10561 struct remote_state
*rs
= get_remote_state ();
10564 sprintf (rs
->buf
, "QTBuffer:circular:%x", val
);
10566 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10567 if (*reply
== '\0')
10568 error (_("Target does not support this command."));
10569 if (strcmp (reply
, "OK") != 0)
10570 error (_("Bogus reply from target: %s"), reply
);
10573 static struct traceframe_info
*
10574 remote_traceframe_info (void)
10578 text
= target_read_stralloc (¤t_target
,
10579 TARGET_OBJECT_TRACEFRAME_INFO
, NULL
);
10582 struct traceframe_info
*info
;
10583 struct cleanup
*back_to
= make_cleanup (xfree
, text
);
10585 info
= parse_traceframe_info (text
);
10586 do_cleanups (back_to
);
10593 /* Handle the qTMinFTPILen packet. Returns the minimum length of
10594 instruction on which a fast tracepoint may be placed. Returns -1
10595 if the packet is not supported, and 0 if the minimum instruction
10596 length is unknown. */
10599 remote_get_min_fast_tracepoint_insn_len (void)
10601 struct remote_state
*rs
= get_remote_state ();
10604 /* If we're not debugging a process yet, the IPA can't be
10606 if (!target_has_execution
)
10609 /* Make sure the remote is pointing at the right process. */
10610 set_general_process ();
10612 sprintf (rs
->buf
, "qTMinFTPILen");
10614 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10615 if (*reply
== '\0')
10619 ULONGEST min_insn_len
;
10621 unpack_varlen_hex (reply
, &min_insn_len
);
10623 return (int) min_insn_len
;
10628 remote_set_trace_notes (char *user
, char *notes
, char *stop_notes
)
10630 struct remote_state
*rs
= get_remote_state ();
10632 char *buf
= rs
->buf
;
10633 char *endbuf
= rs
->buf
+ get_remote_packet_size ();
10636 buf
+= xsnprintf (buf
, endbuf
- buf
, "QTNotes:");
10639 buf
+= xsnprintf (buf
, endbuf
- buf
, "user:");
10640 nbytes
= bin2hex (user
, buf
, 0);
10646 buf
+= xsnprintf (buf
, endbuf
- buf
, "notes:");
10647 nbytes
= bin2hex (notes
, buf
, 0);
10653 buf
+= xsnprintf (buf
, endbuf
- buf
, "tstop:");
10654 nbytes
= bin2hex (stop_notes
, buf
, 0);
10658 /* Ensure the buffer is terminated. */
10662 reply
= remote_get_noisy_reply (&target_buf
, &target_buf_size
);
10663 if (*reply
== '\0')
10666 if (strcmp (reply
, "OK") != 0)
10667 error (_("Bogus reply from target: %s"), reply
);
10673 init_remote_ops (void)
10675 remote_ops
.to_shortname
= "remote";
10676 remote_ops
.to_longname
= "Remote serial target in gdb-specific protocol";
10677 remote_ops
.to_doc
=
10678 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10679 Specify the serial device it is connected to\n\
10680 (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).";
10681 remote_ops
.to_open
= remote_open
;
10682 remote_ops
.to_close
= remote_close
;
10683 remote_ops
.to_detach
= remote_detach
;
10684 remote_ops
.to_disconnect
= remote_disconnect
;
10685 remote_ops
.to_resume
= remote_resume
;
10686 remote_ops
.to_wait
= remote_wait
;
10687 remote_ops
.to_fetch_registers
= remote_fetch_registers
;
10688 remote_ops
.to_store_registers
= remote_store_registers
;
10689 remote_ops
.to_prepare_to_store
= remote_prepare_to_store
;
10690 remote_ops
.deprecated_xfer_memory
= remote_xfer_memory
;
10691 remote_ops
.to_files_info
= remote_files_info
;
10692 remote_ops
.to_insert_breakpoint
= remote_insert_breakpoint
;
10693 remote_ops
.to_remove_breakpoint
= remote_remove_breakpoint
;
10694 remote_ops
.to_stopped_by_watchpoint
= remote_stopped_by_watchpoint
;
10695 remote_ops
.to_stopped_data_address
= remote_stopped_data_address
;
10696 remote_ops
.to_can_use_hw_breakpoint
= remote_check_watch_resources
;
10697 remote_ops
.to_insert_hw_breakpoint
= remote_insert_hw_breakpoint
;
10698 remote_ops
.to_remove_hw_breakpoint
= remote_remove_hw_breakpoint
;
10699 remote_ops
.to_region_ok_for_hw_watchpoint
10700 = remote_region_ok_for_hw_watchpoint
;
10701 remote_ops
.to_insert_watchpoint
= remote_insert_watchpoint
;
10702 remote_ops
.to_remove_watchpoint
= remote_remove_watchpoint
;
10703 remote_ops
.to_kill
= remote_kill
;
10704 remote_ops
.to_load
= generic_load
;
10705 remote_ops
.to_mourn_inferior
= remote_mourn
;
10706 remote_ops
.to_pass_signals
= remote_pass_signals
;
10707 remote_ops
.to_thread_alive
= remote_thread_alive
;
10708 remote_ops
.to_find_new_threads
= remote_threads_info
;
10709 remote_ops
.to_pid_to_str
= remote_pid_to_str
;
10710 remote_ops
.to_extra_thread_info
= remote_threads_extra_info
;
10711 remote_ops
.to_get_ada_task_ptid
= remote_get_ada_task_ptid
;
10712 remote_ops
.to_stop
= remote_stop
;
10713 remote_ops
.to_xfer_partial
= remote_xfer_partial
;
10714 remote_ops
.to_rcmd
= remote_rcmd
;
10715 remote_ops
.to_log_command
= serial_log_command
;
10716 remote_ops
.to_get_thread_local_address
= remote_get_thread_local_address
;
10717 remote_ops
.to_stratum
= process_stratum
;
10718 remote_ops
.to_has_all_memory
= default_child_has_all_memory
;
10719 remote_ops
.to_has_memory
= default_child_has_memory
;
10720 remote_ops
.to_has_stack
= default_child_has_stack
;
10721 remote_ops
.to_has_registers
= default_child_has_registers
;
10722 remote_ops
.to_has_execution
= default_child_has_execution
;
10723 remote_ops
.to_has_thread_control
= tc_schedlock
; /* can lock scheduler */
10724 remote_ops
.to_can_execute_reverse
= remote_can_execute_reverse
;
10725 remote_ops
.to_magic
= OPS_MAGIC
;
10726 remote_ops
.to_memory_map
= remote_memory_map
;
10727 remote_ops
.to_flash_erase
= remote_flash_erase
;
10728 remote_ops
.to_flash_done
= remote_flash_done
;
10729 remote_ops
.to_read_description
= remote_read_description
;
10730 remote_ops
.to_search_memory
= remote_search_memory
;
10731 remote_ops
.to_can_async_p
= remote_can_async_p
;
10732 remote_ops
.to_is_async_p
= remote_is_async_p
;
10733 remote_ops
.to_async
= remote_async
;
10734 remote_ops
.to_terminal_inferior
= remote_terminal_inferior
;
10735 remote_ops
.to_terminal_ours
= remote_terminal_ours
;
10736 remote_ops
.to_supports_non_stop
= remote_supports_non_stop
;
10737 remote_ops
.to_supports_multi_process
= remote_supports_multi_process
;
10738 remote_ops
.to_supports_disable_randomization
10739 = remote_supports_disable_randomization
;
10740 remote_ops
.to_fileio_open
= remote_hostio_open
;
10741 remote_ops
.to_fileio_pwrite
= remote_hostio_pwrite
;
10742 remote_ops
.to_fileio_pread
= remote_hostio_pread
;
10743 remote_ops
.to_fileio_close
= remote_hostio_close
;
10744 remote_ops
.to_fileio_unlink
= remote_hostio_unlink
;
10745 remote_ops
.to_fileio_readlink
= remote_hostio_readlink
;
10746 remote_ops
.to_supports_enable_disable_tracepoint
= remote_supports_enable_disable_tracepoint
;
10747 remote_ops
.to_supports_string_tracing
= remote_supports_string_tracing
;
10748 remote_ops
.to_trace_init
= remote_trace_init
;
10749 remote_ops
.to_download_tracepoint
= remote_download_tracepoint
;
10750 remote_ops
.to_can_download_tracepoint
= remote_can_download_tracepoint
;
10751 remote_ops
.to_download_trace_state_variable
10752 = remote_download_trace_state_variable
;
10753 remote_ops
.to_enable_tracepoint
= remote_enable_tracepoint
;
10754 remote_ops
.to_disable_tracepoint
= remote_disable_tracepoint
;
10755 remote_ops
.to_trace_set_readonly_regions
= remote_trace_set_readonly_regions
;
10756 remote_ops
.to_trace_start
= remote_trace_start
;
10757 remote_ops
.to_get_trace_status
= remote_get_trace_status
;
10758 remote_ops
.to_get_tracepoint_status
= remote_get_tracepoint_status
;
10759 remote_ops
.to_trace_stop
= remote_trace_stop
;
10760 remote_ops
.to_trace_find
= remote_trace_find
;
10761 remote_ops
.to_get_trace_state_variable_value
10762 = remote_get_trace_state_variable_value
;
10763 remote_ops
.to_save_trace_data
= remote_save_trace_data
;
10764 remote_ops
.to_upload_tracepoints
= remote_upload_tracepoints
;
10765 remote_ops
.to_upload_trace_state_variables
10766 = remote_upload_trace_state_variables
;
10767 remote_ops
.to_get_raw_trace_data
= remote_get_raw_trace_data
;
10768 remote_ops
.to_get_min_fast_tracepoint_insn_len
= remote_get_min_fast_tracepoint_insn_len
;
10769 remote_ops
.to_set_disconnected_tracing
= remote_set_disconnected_tracing
;
10770 remote_ops
.to_set_circular_trace_buffer
= remote_set_circular_trace_buffer
;
10771 remote_ops
.to_set_trace_notes
= remote_set_trace_notes
;
10772 remote_ops
.to_core_of_thread
= remote_core_of_thread
;
10773 remote_ops
.to_verify_memory
= remote_verify_memory
;
10774 remote_ops
.to_get_tib_address
= remote_get_tib_address
;
10775 remote_ops
.to_set_permissions
= remote_set_permissions
;
10776 remote_ops
.to_static_tracepoint_marker_at
10777 = remote_static_tracepoint_marker_at
;
10778 remote_ops
.to_static_tracepoint_markers_by_strid
10779 = remote_static_tracepoint_markers_by_strid
;
10780 remote_ops
.to_traceframe_info
= remote_traceframe_info
;
10783 /* Set up the extended remote vector by making a copy of the standard
10784 remote vector and adding to it. */
10787 init_extended_remote_ops (void)
10789 extended_remote_ops
= remote_ops
;
10791 extended_remote_ops
.to_shortname
= "extended-remote";
10792 extended_remote_ops
.to_longname
=
10793 "Extended remote serial target in gdb-specific protocol";
10794 extended_remote_ops
.to_doc
=
10795 "Use a remote computer via a serial line, using a gdb-specific protocol.\n\
10796 Specify the serial device it is connected to (e.g. /dev/ttya).";
10797 extended_remote_ops
.to_open
= extended_remote_open
;
10798 extended_remote_ops
.to_create_inferior
= extended_remote_create_inferior
;
10799 extended_remote_ops
.to_mourn_inferior
= extended_remote_mourn
;
10800 extended_remote_ops
.to_detach
= extended_remote_detach
;
10801 extended_remote_ops
.to_attach
= extended_remote_attach
;
10802 extended_remote_ops
.to_kill
= extended_remote_kill
;
10803 extended_remote_ops
.to_supports_disable_randomization
10804 = extended_remote_supports_disable_randomization
;
10808 remote_can_async_p (void)
10810 if (!target_async_permitted
)
10811 /* We only enable async when the user specifically asks for it. */
10814 /* We're async whenever the serial device is. */
10815 return serial_can_async_p (remote_desc
);
10819 remote_is_async_p (void)
10821 if (!target_async_permitted
)
10822 /* We only enable async when the user specifically asks for it. */
10825 /* We're async whenever the serial device is. */
10826 return serial_is_async_p (remote_desc
);
10829 /* Pass the SERIAL event on and up to the client. One day this code
10830 will be able to delay notifying the client of an event until the
10831 point where an entire packet has been received. */
10833 static void (*async_client_callback
) (enum inferior_event_type event_type
,
10835 static void *async_client_context
;
10836 static serial_event_ftype remote_async_serial_handler
;
10839 remote_async_serial_handler (struct serial
*scb
, void *context
)
10841 /* Don't propogate error information up to the client. Instead let
10842 the client find out about the error by querying the target. */
10843 async_client_callback (INF_REG_EVENT
, async_client_context
);
10847 remote_async_inferior_event_handler (gdb_client_data data
)
10849 inferior_event_handler (INF_REG_EVENT
, NULL
);
10853 remote_async_get_pending_events_handler (gdb_client_data data
)
10855 remote_get_pending_stop_replies ();
10859 remote_async (void (*callback
) (enum inferior_event_type event_type
,
10860 void *context
), void *context
)
10862 if (callback
!= NULL
)
10864 serial_async (remote_desc
, remote_async_serial_handler
, NULL
);
10865 async_client_callback
= callback
;
10866 async_client_context
= context
;
10869 serial_async (remote_desc
, NULL
, NULL
);
10873 set_remote_cmd (char *args
, int from_tty
)
10875 help_list (remote_set_cmdlist
, "set remote ", -1, gdb_stdout
);
10879 show_remote_cmd (char *args
, int from_tty
)
10881 /* We can't just use cmd_show_list here, because we want to skip
10882 the redundant "show remote Z-packet" and the legacy aliases. */
10883 struct cleanup
*showlist_chain
;
10884 struct cmd_list_element
*list
= remote_show_cmdlist
;
10885 struct ui_out
*uiout
= current_uiout
;
10887 showlist_chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "showlist");
10888 for (; list
!= NULL
; list
= list
->next
)
10889 if (strcmp (list
->name
, "Z-packet") == 0)
10891 else if (list
->type
== not_set_cmd
)
10892 /* Alias commands are exactly like the original, except they
10893 don't have the normal type. */
10897 struct cleanup
*option_chain
10898 = make_cleanup_ui_out_tuple_begin_end (uiout
, "option");
10900 ui_out_field_string (uiout
, "name", list
->name
);
10901 ui_out_text (uiout
, ": ");
10902 if (list
->type
== show_cmd
)
10903 do_setshow_command ((char *) NULL
, from_tty
, list
);
10905 cmd_func (list
, NULL
, from_tty
);
10906 /* Close the tuple. */
10907 do_cleanups (option_chain
);
10910 /* Close the tuple. */
10911 do_cleanups (showlist_chain
);
10915 /* Function to be called whenever a new objfile (shlib) is detected. */
10917 remote_new_objfile (struct objfile
*objfile
)
10919 if (remote_desc
!= 0) /* Have a remote connection. */
10920 remote_check_symbols (objfile
);
10923 /* Pull all the tracepoints defined on the target and create local
10924 data structures representing them. We don't want to create real
10925 tracepoints yet, we don't want to mess up the user's existing
10929 remote_upload_tracepoints (struct uploaded_tp
**utpp
)
10931 struct remote_state
*rs
= get_remote_state ();
10934 /* Ask for a first packet of tracepoint definition. */
10936 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10938 while (*p
&& *p
!= 'l')
10940 parse_tracepoint_definition (p
, utpp
);
10941 /* Ask for another packet of tracepoint definition. */
10943 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10950 remote_upload_trace_state_variables (struct uploaded_tsv
**utsvp
)
10952 struct remote_state
*rs
= get_remote_state ();
10955 /* Ask for a first packet of variable definition. */
10957 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10959 while (*p
&& *p
!= 'l')
10961 parse_tsv_definition (p
, utsvp
);
10962 /* Ask for another packet of variable definition. */
10964 getpkt (&rs
->buf
, &rs
->buf_size
, 0);
10971 _initialize_remote (void)
10973 struct remote_state
*rs
;
10974 struct cmd_list_element
*cmd
;
10977 /* architecture specific data */
10978 remote_gdbarch_data_handle
=
10979 gdbarch_data_register_post_init (init_remote_state
);
10980 remote_g_packet_data_handle
=
10981 gdbarch_data_register_pre_init (remote_g_packet_data_init
);
10983 /* Initialize the per-target state. At the moment there is only one
10984 of these, not one per target. Only one target is active at a
10985 time. The default buffer size is unimportant; it will be expanded
10986 whenever a larger buffer is needed. */
10987 rs
= get_remote_state_raw ();
10988 rs
->buf_size
= 400;
10989 rs
->buf
= xmalloc (rs
->buf_size
);
10991 init_remote_ops ();
10992 add_target (&remote_ops
);
10994 init_extended_remote_ops ();
10995 add_target (&extended_remote_ops
);
10997 /* Hook into new objfile notification. */
10998 observer_attach_new_objfile (remote_new_objfile
);
11000 /* Set up signal handlers. */
11001 sigint_remote_token
=
11002 create_async_signal_handler (async_remote_interrupt
, NULL
);
11003 sigint_remote_twice_token
=
11004 create_async_signal_handler (async_remote_interrupt_twice
, NULL
);
11007 init_remote_threadtests ();
11010 /* set/show remote ... */
11012 add_prefix_cmd ("remote", class_maintenance
, set_remote_cmd
, _("\
11013 Remote protocol specific variables\n\
11014 Configure various remote-protocol specific variables such as\n\
11015 the packets being used"),
11016 &remote_set_cmdlist
, "set remote ",
11017 0 /* allow-unknown */, &setlist
);
11018 add_prefix_cmd ("remote", class_maintenance
, show_remote_cmd
, _("\
11019 Remote protocol specific variables\n\
11020 Configure various remote-protocol specific variables such as\n\
11021 the packets being used"),
11022 &remote_show_cmdlist
, "show remote ",
11023 0 /* allow-unknown */, &showlist
);
11025 add_cmd ("compare-sections", class_obscure
, compare_sections_command
, _("\
11026 Compare section data on target to the exec file.\n\
11027 Argument is a single section name (default: all loaded sections)."),
11030 add_cmd ("packet", class_maintenance
, packet_command
, _("\
11031 Send an arbitrary packet to a remote target.\n\
11032 maintenance packet TEXT\n\
11033 If GDB is talking to an inferior via the GDB serial protocol, then\n\
11034 this command sends the string TEXT to the inferior, and displays the\n\
11035 response packet. GDB supplies the initial `$' character, and the\n\
11036 terminating `#' character and checksum."),
11039 add_setshow_boolean_cmd ("remotebreak", no_class
, &remote_break
, _("\
11040 Set whether to send break if interrupted."), _("\
11041 Show whether to send break if interrupted."), _("\
11042 If set, a break, instead of a cntrl-c, is sent to the remote target."),
11043 set_remotebreak
, show_remotebreak
,
11044 &setlist
, &showlist
);
11045 cmd_name
= "remotebreak";
11046 cmd
= lookup_cmd (&cmd_name
, setlist
, "", -1, 1);
11047 deprecate_cmd (cmd
, "set remote interrupt-sequence");
11048 cmd_name
= "remotebreak"; /* needed because lookup_cmd updates the pointer */
11049 cmd
= lookup_cmd (&cmd_name
, showlist
, "", -1, 1);
11050 deprecate_cmd (cmd
, "show remote interrupt-sequence");
11052 add_setshow_enum_cmd ("interrupt-sequence", class_support
,
11053 interrupt_sequence_modes
, &interrupt_sequence_mode
,
11055 Set interrupt sequence to remote target."), _("\
11056 Show interrupt sequence to remote target."), _("\
11057 Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."),
11058 NULL
, show_interrupt_sequence
,
11059 &remote_set_cmdlist
,
11060 &remote_show_cmdlist
);
11062 add_setshow_boolean_cmd ("interrupt-on-connect", class_support
,
11063 &interrupt_on_connect
, _("\
11064 Set whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11065 Show whether interrupt-sequence is sent to remote target when gdb connects to."), _(" \
11066 If set, interrupt sequence is sent to remote target."),
11068 &remote_set_cmdlist
, &remote_show_cmdlist
);
11070 /* Install commands for configuring memory read/write packets. */
11072 add_cmd ("remotewritesize", no_class
, set_memory_write_packet_size
, _("\
11073 Set the maximum number of bytes per memory write packet (deprecated)."),
11075 add_cmd ("remotewritesize", no_class
, show_memory_write_packet_size
, _("\
11076 Show the maximum number of bytes per memory write packet (deprecated)."),
11078 add_cmd ("memory-write-packet-size", no_class
,
11079 set_memory_write_packet_size
, _("\
11080 Set the maximum number of bytes per memory-write packet.\n\
11081 Specify the number of bytes in a packet or 0 (zero) for the\n\
11082 default packet size. The actual limit is further reduced\n\
11083 dependent on the target. Specify ``fixed'' to disable the\n\
11084 further restriction and ``limit'' to enable that restriction."),
11085 &remote_set_cmdlist
);
11086 add_cmd ("memory-read-packet-size", no_class
,
11087 set_memory_read_packet_size
, _("\
11088 Set the maximum number of bytes per memory-read packet.\n\
11089 Specify the number of bytes in a packet or 0 (zero) for the\n\
11090 default packet size. The actual limit is further reduced\n\
11091 dependent on the target. Specify ``fixed'' to disable the\n\
11092 further restriction and ``limit'' to enable that restriction."),
11093 &remote_set_cmdlist
);
11094 add_cmd ("memory-write-packet-size", no_class
,
11095 show_memory_write_packet_size
,
11096 _("Show the maximum number of bytes per memory-write packet."),
11097 &remote_show_cmdlist
);
11098 add_cmd ("memory-read-packet-size", no_class
,
11099 show_memory_read_packet_size
,
11100 _("Show the maximum number of bytes per memory-read packet."),
11101 &remote_show_cmdlist
);
11103 add_setshow_zinteger_cmd ("hardware-watchpoint-limit", no_class
,
11104 &remote_hw_watchpoint_limit
, _("\
11105 Set the maximum number of target hardware watchpoints."), _("\
11106 Show the maximum number of target hardware watchpoints."), _("\
11107 Specify a negative limit for unlimited."),
11108 NULL
, NULL
, /* FIXME: i18n: The maximum
11109 number of target hardware
11110 watchpoints is %s. */
11111 &remote_set_cmdlist
, &remote_show_cmdlist
);
11112 add_setshow_zinteger_cmd ("hardware-watchpoint-length-limit", no_class
,
11113 &remote_hw_watchpoint_length_limit
, _("\
11114 Set the maximum length (in bytes) of a target hardware watchpoint."), _("\
11115 Show the maximum length (in bytes) of a target hardware watchpoint."), _("\
11116 Specify a negative limit for unlimited."),
11117 NULL
, NULL
, /* FIXME: i18n: The maximum
11118 length (in bytes) of a target
11119 hardware watchpoint is %s. */
11120 &remote_set_cmdlist
, &remote_show_cmdlist
);
11121 add_setshow_zinteger_cmd ("hardware-breakpoint-limit", no_class
,
11122 &remote_hw_breakpoint_limit
, _("\
11123 Set the maximum number of target hardware breakpoints."), _("\
11124 Show the maximum number of target hardware breakpoints."), _("\
11125 Specify a negative limit for unlimited."),
11126 NULL
, NULL
, /* FIXME: i18n: The maximum
11127 number of target hardware
11128 breakpoints is %s. */
11129 &remote_set_cmdlist
, &remote_show_cmdlist
);
11131 add_setshow_integer_cmd ("remoteaddresssize", class_obscure
,
11132 &remote_address_size
, _("\
11133 Set the maximum size of the address (in bits) in a memory packet."), _("\
11134 Show the maximum size of the address (in bits) in a memory packet."), NULL
,
11136 NULL
, /* FIXME: i18n: */
11137 &setlist
, &showlist
);
11139 add_packet_config_cmd (&remote_protocol_packets
[PACKET_X
],
11140 "X", "binary-download", 1);
11142 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vCont
],
11143 "vCont", "verbose-resume", 0);
11145 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QPassSignals
],
11146 "QPassSignals", "pass-signals", 0);
11148 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSymbol
],
11149 "qSymbol", "symbol-lookup", 0);
11151 add_packet_config_cmd (&remote_protocol_packets
[PACKET_P
],
11152 "P", "set-register", 1);
11154 add_packet_config_cmd (&remote_protocol_packets
[PACKET_p
],
11155 "p", "fetch-register", 1);
11157 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z0
],
11158 "Z0", "software-breakpoint", 0);
11160 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z1
],
11161 "Z1", "hardware-breakpoint", 0);
11163 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z2
],
11164 "Z2", "write-watchpoint", 0);
11166 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z3
],
11167 "Z3", "read-watchpoint", 0);
11169 add_packet_config_cmd (&remote_protocol_packets
[PACKET_Z4
],
11170 "Z4", "access-watchpoint", 0);
11172 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_auxv
],
11173 "qXfer:auxv:read", "read-aux-vector", 0);
11175 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_features
],
11176 "qXfer:features:read", "target-features", 0);
11178 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries
],
11179 "qXfer:libraries:read", "library-info", 0);
11181 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_libraries_svr4
],
11182 "qXfer:libraries-svr4:read", "library-info-svr4", 0);
11184 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_memory_map
],
11185 "qXfer:memory-map:read", "memory-map", 0);
11187 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_read
],
11188 "qXfer:spu:read", "read-spu-object", 0);
11190 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_spu_write
],
11191 "qXfer:spu:write", "write-spu-object", 0);
11193 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_osdata
],
11194 "qXfer:osdata:read", "osdata", 0);
11196 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_threads
],
11197 "qXfer:threads:read", "threads", 0);
11199 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_read
],
11200 "qXfer:siginfo:read", "read-siginfo-object", 0);
11202 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_siginfo_write
],
11203 "qXfer:siginfo:write", "write-siginfo-object", 0);
11205 add_packet_config_cmd
11206 (&remote_protocol_packets
[PACKET_qXfer_traceframe_info
],
11207 "qXfer:trace-frame-info:read", "traceframe-info", 0);
11209 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTLSAddr
],
11210 "qGetTLSAddr", "get-thread-local-storage-address",
11213 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qGetTIBAddr
],
11214 "qGetTIBAddr", "get-thread-information-block-address",
11217 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bc
],
11218 "bc", "reverse-continue", 0);
11220 add_packet_config_cmd (&remote_protocol_packets
[PACKET_bs
],
11221 "bs", "reverse-step", 0);
11223 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSupported
],
11224 "qSupported", "supported-packets", 0);
11226 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qSearch_memory
],
11227 "qSearch:memory", "search-memory", 0);
11229 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_open
],
11230 "vFile:open", "hostio-open", 0);
11232 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pread
],
11233 "vFile:pread", "hostio-pread", 0);
11235 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_pwrite
],
11236 "vFile:pwrite", "hostio-pwrite", 0);
11238 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_close
],
11239 "vFile:close", "hostio-close", 0);
11241 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_unlink
],
11242 "vFile:unlink", "hostio-unlink", 0);
11244 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vFile_readlink
],
11245 "vFile:readlink", "hostio-readlink", 0);
11247 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vAttach
],
11248 "vAttach", "attach", 0);
11250 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vRun
],
11253 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QStartNoAckMode
],
11254 "QStartNoAckMode", "noack", 0);
11256 add_packet_config_cmd (&remote_protocol_packets
[PACKET_vKill
],
11257 "vKill", "kill", 0);
11259 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qAttached
],
11260 "qAttached", "query-attached", 0);
11262 add_packet_config_cmd (&remote_protocol_packets
[PACKET_ConditionalTracepoints
],
11263 "ConditionalTracepoints",
11264 "conditional-tracepoints", 0);
11265 add_packet_config_cmd (&remote_protocol_packets
[PACKET_FastTracepoints
],
11266 "FastTracepoints", "fast-tracepoints", 0);
11268 add_packet_config_cmd (&remote_protocol_packets
[PACKET_TracepointSource
],
11269 "TracepointSource", "TracepointSource", 0);
11271 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QAllow
],
11272 "QAllow", "allow", 0);
11274 add_packet_config_cmd (&remote_protocol_packets
[PACKET_StaticTracepoints
],
11275 "StaticTracepoints", "static-tracepoints", 0);
11277 add_packet_config_cmd (&remote_protocol_packets
[PACKET_InstallInTrace
],
11278 "InstallInTrace", "install-in-trace", 0);
11280 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_statictrace_read
],
11281 "qXfer:statictrace:read", "read-sdata-object", 0);
11283 add_packet_config_cmd (&remote_protocol_packets
[PACKET_qXfer_fdpic
],
11284 "qXfer:fdpic:read", "read-fdpic-loadmap", 0);
11286 add_packet_config_cmd (&remote_protocol_packets
[PACKET_QDisableRandomization
],
11287 "QDisableRandomization", "disable-randomization", 0);
11289 /* Keep the old ``set remote Z-packet ...'' working. Each individual
11290 Z sub-packet has its own set and show commands, but users may
11291 have sets to this variable in their .gdbinit files (or in their
11293 add_setshow_auto_boolean_cmd ("Z-packet", class_obscure
,
11294 &remote_Z_packet_detect
, _("\
11295 Set use of remote protocol `Z' packets"), _("\
11296 Show use of remote protocol `Z' packets "), _("\
11297 When set, GDB will attempt to use the remote breakpoint and watchpoint\n\
11299 set_remote_protocol_Z_packet_cmd
,
11300 show_remote_protocol_Z_packet_cmd
,
11301 /* FIXME: i18n: Use of remote protocol
11302 `Z' packets is %s. */
11303 &remote_set_cmdlist
, &remote_show_cmdlist
);
11305 add_prefix_cmd ("remote", class_files
, remote_command
, _("\
11306 Manipulate files on the remote system\n\
11307 Transfer files to and from the remote target system."),
11308 &remote_cmdlist
, "remote ",
11309 0 /* allow-unknown */, &cmdlist
);
11311 add_cmd ("put", class_files
, remote_put_command
,
11312 _("Copy a local file to the remote system."),
11315 add_cmd ("get", class_files
, remote_get_command
,
11316 _("Copy a remote file to the local system."),
11319 add_cmd ("delete", class_files
, remote_delete_command
,
11320 _("Delete a remote file."),
11323 remote_exec_file
= xstrdup ("");
11324 add_setshow_string_noescape_cmd ("exec-file", class_files
,
11325 &remote_exec_file
, _("\
11326 Set the remote pathname for \"run\""), _("\
11327 Show the remote pathname for \"run\""), NULL
, NULL
, NULL
,
11328 &remote_set_cmdlist
, &remote_show_cmdlist
);
11330 /* Eventually initialize fileio. See fileio.c */
11331 initialize_remote_fileio (remote_set_cmdlist
, remote_show_cmdlist
);
11333 /* Take advantage of the fact that the LWP field is not used, to tag
11334 special ptids with it set to != 0. */
11335 magic_null_ptid
= ptid_build (42000, 1, -1);
11336 not_sent_ptid
= ptid_build (42000, 1, -2);
11337 any_thread_ptid
= ptid_build (42000, 1, 0);
11339 target_buf_size
= 2048;
11340 target_buf
= xmalloc (target_buf_size
);